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frosty
2026-03-10 02:32:51 -04:00
parent 24cec7a350
commit a11bf8bb6c
19 changed files with 1537 additions and 1284 deletions
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20
src/Config.c
View File

@@ -24,7 +24,8 @@ int load_config(const char *filename, Config *config) {
char *end = strchr(line, ']'); char *end = strchr(line, ']');
if (end) { if (end) {
*end = '\0'; *end = '\0';
snprintf(section, sizeof(section), "%.*s", (int)(sizeof(section) - 1), line + 1); snprintf(section, sizeof(section), "%.*s", (int)(sizeof(section) - 1),
line + 1);
section[sizeof(section) - 1] = '\0'; section[sizeof(section) - 1] = '\0';
} }
continue; continue;
@@ -36,8 +37,10 @@ int load_config(const char *filename, Config *config) {
char *key = line; char *key = line;
char *value = delimiter + 1; char *value = delimiter + 1;
while (*key == ' ' || *key == '\t') key++; while (*key == ' ' || *key == '\t')
while (*value == ' ' || *value == '\t') value++; key++;
while (*value == ' ' || *value == '\t')
value++;
char *key_end = key + strlen(key) - 1; char *key_end = key + strlen(key) - 1;
while (key_end > key && (*key_end == ' ' || *key_end == '\t')) { while (key_end > key && (*key_end == ' ' || *key_end == '\t')) {
@@ -46,12 +49,14 @@ int load_config(const char *filename, Config *config) {
} }
char *value_end = value + strlen(value) - 1; char *value_end = value + strlen(value) - 1;
while (value_end > value && (*value_end == ' ' || *value_end == '\t' || *value_end == '"' || *value_end == '\'')) { while (value_end > value && (*value_end == ' ' || *value_end == '\t' ||
*value_end == '"' || *value_end == '\'')) {
*value_end = '\0'; *value_end = '\0';
value_end--; value_end--;
} }
while (*value == '"' || *value == '\'') value++; while (*value == '"' || *value == '\'')
value++;
if (strcmp(section, "server") == 0) { if (strcmp(section, "server") == 0) {
if (strcmp(key, "host") == 0) { if (strcmp(key, "host") == 0) {
@@ -65,7 +70,8 @@ int load_config(const char *filename, Config *config) {
strncpy(config->proxy, value, sizeof(config->proxy) - 1); strncpy(config->proxy, value, sizeof(config->proxy) - 1);
config->proxy[sizeof(config->proxy) - 1] = '\0'; config->proxy[sizeof(config->proxy) - 1] = '\0';
} else if (strcmp(key, "list_file") == 0) { } else if (strcmp(key, "list_file") == 0) {
strncpy(config->proxy_list_file, value, sizeof(config->proxy_list_file) - 1); strncpy(config->proxy_list_file, value,
sizeof(config->proxy_list_file) - 1);
config->proxy_list_file[sizeof(config->proxy_list_file) - 1] = '\0'; config->proxy_list_file[sizeof(config->proxy_list_file) - 1] = '\0';
} else if (strcmp(key, "max_retries") == 0) { } else if (strcmp(key, "max_retries") == 0) {
config->max_proxy_retries = atoi(value); config->max_proxy_retries = atoi(value);
@@ -80,4 +86,4 @@ int load_config(const char *filename, Config *config) {
fclose(file); fclose(file);
return 0; return 0;
} }

2
src/Config.h
View File

@@ -13,4 +13,4 @@ typedef struct {
int load_config(const char *filename, Config *config); int load_config(const char *filename, Config *config);
#endif #endif

41
src/Infobox/Calculator.c
View File

@@ -1,9 +1,9 @@
#include "Calculator.h" #include "Calculator.h"
#include <ctype.h>
#include <math.h>
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#include <string.h> #include <string.h>
#include <math.h>
#include <ctype.h>
static char logic_log[4096]; static char logic_log[4096];
@@ -15,7 +15,8 @@ typedef struct {
static double parse_expression(Parser *p); static double parse_expression(Parser *p);
static void skip_ws(Parser *p) { static void skip_ws(Parser *p) {
while (p->buffer[p->pos] == ' ') p->pos++; while (p->buffer[p->pos] == ' ')
p->pos++;
} }
static double parse_factor(Parser *p) { static double parse_factor(Parser *p) {
@@ -27,7 +28,8 @@ static double parse_factor(Parser *p) {
if (p->buffer[p->pos] == '(') { if (p->buffer[p->pos] == '(') {
p->pos++; p->pos++;
double res = parse_expression(p); double res = parse_expression(p);
if (p->buffer[p->pos] == ')') p->pos++; if (p->buffer[p->pos] == ')')
p->pos++;
return res; return res;
} }
char *endptr; char *endptr;
@@ -50,7 +52,7 @@ static double parse_term(Parser *p) {
char step[256]; char step[256];
snprintf(step, sizeof(step), "<div>%g %c %g = <b>%g</b></div>", old, op, snprintf(step, sizeof(step), "<div>%g %c %g = <b>%g</b></div>", old, op,
right, left); right, left);
strncat(logic_log, step, sizeof(logic_log) - strlen(logic_log) - 1); strncat(logic_log, step, sizeof(logic_log) - strlen(logic_log) - 1);
} else } else
break; break;
@@ -72,7 +74,7 @@ static double parse_expression(Parser *p) {
char step[256]; char step[256];
snprintf(step, sizeof(step), "<div>%g %c %g = <b>%g</b></div>", old, op, snprintf(step, sizeof(step), "<div>%g %c %g = <b>%g</b></div>", old, op,
right, left); right, left);
strncat(logic_log, step, sizeof(logic_log) - strlen(logic_log) - 1); strncat(logic_log, step, sizeof(logic_log) - strlen(logic_log) - 1);
} else } else
break; break;
@@ -82,33 +84,34 @@ static double parse_expression(Parser *p) {
double evaluate(const char *expr) { double evaluate(const char *expr) {
logic_log[0] = '\0'; logic_log[0] = '\0';
if (!expr || strlen(expr) == 0) return 0.0; if (!expr || strlen(expr) == 0)
return 0.0;
Parser p = {expr, 0}; Parser p = {expr, 0};
return parse_expression(&p); return parse_expression(&p);
} }
InfoBox fetch_calc_data(char *math_input) { InfoBox fetch_calc_data(char *math_input) {
InfoBox info = {NULL, NULL, NULL, NULL}; InfoBox info = {NULL, NULL, NULL, NULL};
if (!math_input) return info; if (!math_input)
return info;
double result = evaluate(math_input); double result = evaluate(math_input);
char html_output[5120]; char html_output[5120];
snprintf(html_output, sizeof(html_output), snprintf(html_output, sizeof(html_output),
"<div class='calc-container' style='line-height: 1.6;'>" "<div class='calc-container' style='line-height: 1.6;'>"
"%s" "%s"
"<div style='margin-top: 8px; border-top: 1px solid #eee; " "<div style='margin-top: 8px; border-top: 1px solid #eee; "
"padding-top: 8px; font-size: 1.2em;'>" "padding-top: 8px; font-size: 1.2em;'>"
"<b>%g</b>" "<b>%g</b>"
"</div>" "</div>"
"</div>", "</div>",
strlen(logic_log) > 0 ? logic_log : "<div>Constant value</div>", strlen(logic_log) > 0 ? logic_log : "<div>Constant value</div>",
result); result);
info.title = strdup("Calculation"); info.title = strdup("Calculation");
info.extract = strdup(html_output); info.extract = strdup(html_output);
info.thumbnail_url = info.thumbnail_url = strdup("/static/calculation.svg");
strdup("/static/calculation.svg");
info.url = strdup("#"); info.url = strdup("#");
return info; return info;

197
src/Infobox/Dictionary.c
View File

@@ -1,6 +1,7 @@
#include "Dictionary.h" #include "Dictionary.h"
#include "../Proxy/Proxy.h" #include "../Proxy/Proxy.h"
#include "../Scraping/Scraping.h" #include "../Scraping/Scraping.h"
#include <ctype.h>
#include <curl/curl.h> #include <curl/curl.h>
#include <libxml/HTMLparser.h> #include <libxml/HTMLparser.h>
#include <libxml/xpath.h> #include <libxml/xpath.h>
@@ -8,42 +9,60 @@
#include <stdlib.h> #include <stdlib.h>
#include <string.h> #include <string.h>
#include <strings.h> #include <strings.h>
#include <ctype.h>
static const char *PREFIXES[] = { static const char *PREFIXES[] = {"what is the definition of ",
"what is the definition of ", "what's the definition of ", "what's the definition of ",
"what is the meaning of ", "what's the meaning of ", "what is the meaning of ",
"what does the word ", "definition of ", "meaning of ", "def of ", "what's the meaning of ",
"define ", "definition ", "define:", "def ", "def:", "what does the word ",
"what does ", "what is ", "what's ", "whats ", "definition of ",
"meaning ", "dictionary ", "dict ", NULL "meaning of ",
}; "def of ",
"define ",
"definition ",
"define:",
"def ",
"def:",
"what does ",
"what is ",
"what's ",
"whats ",
"meaning ",
"dictionary ",
"dict ",
NULL};
static const char *SUFFIXES[] = { static const char *SUFFIXES[] = {
" definition", " def", " meaning", " mean", " means", " definition", " def", " meaning", " mean", " means",
" dictionary", " dict", " define", " defined", " dictionary", " dict", " define", " defined", " definition?",
" definition?", " def?", " meaning?", " mean?", " means?", " def?", " meaning?", " mean?", " means?", " in english",
" in english", " in english?", NULL " in english?", NULL};
};
static const char *SKIP_WORDS[] = {"of ", "the ", "a ", "an ", NULL}; static const char *SKIP_WORDS[] = {"of ", "the ", "a ", "an ", NULL};
static const char *strcasestr_impl(const char *haystack, const char *needle) { static const char *strcasestr_impl(const char *haystack, const char *needle) {
if (!haystack || !needle || !*needle) return haystack; if (!haystack || !needle || !*needle)
return haystack;
size_t len = strlen(needle); size_t len = strlen(needle);
for (const char *h = haystack; *h; h++) { for (const char *h = haystack; *h; h++) {
if (strncasecmp(h, needle, len) == 0) return h; if (strncasecmp(h, needle, len) == 0)
return h;
} }
return NULL; return NULL;
} }
struct MemStruct { char *memory; size_t size; }; struct MemStruct {
char *memory;
size_t size;
};
static size_t WriteCallback(void *contents, size_t size, size_t nmemb, void *userp) { static size_t WriteCallback(void *contents, size_t size, size_t nmemb,
void *userp) {
size_t realsize = size * nmemb; size_t realsize = size * nmemb;
struct MemStruct *mem = (struct MemStruct *)userp; struct MemStruct *mem = (struct MemStruct *)userp;
char *ptr = realloc(mem->memory, mem->size + realsize + 1); char *ptr = realloc(mem->memory, mem->size + realsize + 1);
if (!ptr) return 0; if (!ptr)
return 0;
mem->memory = ptr; mem->memory = ptr;
memcpy(&(mem->memory[mem->size]), contents, realsize); memcpy(&(mem->memory[mem->size]), contents, realsize);
mem->size += realsize; mem->size += realsize;
@@ -53,40 +72,57 @@ static size_t WriteCallback(void *contents, size_t size, size_t nmemb, void *use
static char *xpath_text(xmlDocPtr doc, const char *xpath) { static char *xpath_text(xmlDocPtr doc, const char *xpath) {
xmlXPathContextPtr ctx = xmlXPathNewContext(doc); xmlXPathContextPtr ctx = xmlXPathNewContext(doc);
if (!ctx) return NULL; if (!ctx)
return NULL;
xmlXPathObjectPtr obj = xmlXPathEvalExpression((const xmlChar *)xpath, ctx); xmlXPathObjectPtr obj = xmlXPathEvalExpression((const xmlChar *)xpath, ctx);
xmlXPathFreeContext(ctx); xmlXPathFreeContext(ctx);
if (!obj || !obj->nodesetval || obj->nodesetval->nodeNr == 0) { if (!obj || !obj->nodesetval || obj->nodesetval->nodeNr == 0) {
if (obj) xmlXPathFreeObject(obj); if (obj)
xmlXPathFreeObject(obj);
return NULL; return NULL;
} }
xmlChar *content = xmlNodeGetContent(obj->nodesetval->nodeTab[0]); xmlChar *content = xmlNodeGetContent(obj->nodesetval->nodeTab[0]);
char *result = content ? strdup((char *)content) : NULL; char *result = content ? strdup((char *)content) : NULL;
if (content) xmlFree(content); if (content)
xmlFree(content);
xmlXPathFreeObject(obj); xmlXPathFreeObject(obj);
return result; return result;
} }
static char *build_html(const char *word, const char *pron, const char *pos, static char *build_html(const char *word, const char *pron, const char *pos,
const char *def, const char *ex) { const char *def, const char *ex) {
char html[4096]; char html[4096];
int n = snprintf(html, sizeof(html), "<div class='dict-container' style='line-height: 1.6;'>"); int n = snprintf(html, sizeof(html),
if (word) n += snprintf(html + n, sizeof(html) - n, "<div class='dict-container' style='line-height: 1.6;'>");
"<div style='font-size: 1.3em; font-weight: bold; margin-bottom: 4px;'>%s</div>", word); if (word)
if (pron) n += snprintf(html + n, sizeof(html) - n, n += snprintf(html + n, sizeof(html) - n,
"<div style='color: #666; margin-bottom: 8px;'>/%s/</div>", pron); "<div style='font-size: 1.3em; font-weight: bold; "
if (pos) n += snprintf(html + n, sizeof(html) - n, "margin-bottom: 4px;'>%s</div>",
"<div style='font-style: italic; color: #888; margin-bottom: 8px;'>%s</div>", pos); word);
if (def) n += snprintf(html + n, sizeof(html) - n, if (pron)
"<div style='margin-bottom: 8px;'>%s</div>", def); n += snprintf(html + n, sizeof(html) - n,
if (ex) n += snprintf(html + n, sizeof(html) - n, "<div style='color: #666; margin-bottom: 8px;'>/%s/</div>",
"<div style='color: #555; font-style: italic; margin-top: 8px;'>\"%s\"</div>", ex); pron);
if (pos)
n += snprintf(html + n, sizeof(html) - n,
"<div style='font-style: italic; color: #888; margin-bottom: "
"8px;'>%s</div>",
pos);
if (def)
n += snprintf(html + n, sizeof(html) - n,
"<div style='margin-bottom: 8px;'>%s</div>", def);
if (ex)
n += snprintf(html + n, sizeof(html) - n,
"<div style='color: #555; font-style: italic; margin-top: "
"8px;'>\"%s\"</div>",
ex);
snprintf(html + n, sizeof(html) - n, "</div>"); snprintf(html + n, sizeof(html) - n, "</div>");
return strdup(html); return strdup(html);
} }
static char *extract_word(const char *query) { static char *extract_word(const char *query) {
if (!query) return NULL; if (!query)
return NULL;
const char *start = query; const char *start = query;
@@ -98,9 +134,11 @@ static char *extract_word(const char *query) {
} }
} }
while (*start == ' ') start++; while (*start == ' ')
start++;
char *word = strdup(start); char *word = strdup(start);
if (!word) return NULL; if (!word)
return NULL;
int changed = 1; int changed = 1;
while (changed) { while (changed) {
@@ -130,29 +168,37 @@ static char *extract_word(const char *query) {
} }
size_t len = strlen(word); size_t len = strlen(word);
while (len > 0 && (word[len-1] == ' ' || word[len-1] == '?' || while (len > 0 && (word[len - 1] == ' ' || word[len - 1] == '?' ||
word[len-1] == '!' || word[len-1] == '.')) { word[len - 1] == '!' || word[len - 1] == '.')) {
word[--len] = '\0'; word[--len] = '\0';
} }
if (len == 0) { free(word); return NULL; } if (len == 0) {
free(word);
return NULL;
}
for (size_t i = 0; i < len; i++) word[i] = tolower((unsigned char)word[i]); for (size_t i = 0; i < len; i++)
word[i] = tolower((unsigned char)word[i]);
char *space = strchr(word, ' '); char *space = strchr(word, ' ');
if (space) *space = '\0'; if (space)
*space = '\0';
return word; return word;
} }
int is_dictionary_query(const char *query) { int is_dictionary_query(const char *query) {
if (!query) return 0; if (!query)
return 0;
for (int i = 0; PREFIXES[i]; i++) { for (int i = 0; PREFIXES[i]; i++) {
size_t len = strlen(PREFIXES[i]); size_t len = strlen(PREFIXES[i]);
if (strncasecmp(query, PREFIXES[i], len) == 0) { if (strncasecmp(query, PREFIXES[i], len) == 0) {
const char *after = query + len; const char *after = query + len;
while (*after == ' ') after++; while (*after == ' ')
if (*after != '\0') return 1; after++;
if (*after != '\0')
return 1;
} }
} }
@@ -160,23 +206,29 @@ int is_dictionary_query(const char *query) {
const char *pos = strcasestr_impl(query, SUFFIXES[i]); const char *pos = strcasestr_impl(query, SUFFIXES[i]);
if (pos) { if (pos) {
const char *after = pos + strlen(SUFFIXES[i]); const char *after = pos + strlen(SUFFIXES[i]);
while (*after == ' ' || *after == '?' || *after == '!' || *after == '.') after++; while (*after == ' ' || *after == '?' || *after == '!' || *after == '.')
if (*after == '\0' && pos > query && (pos - query) < 100) return 1; after++;
if (*after == '\0' && pos > query && (pos - query) < 100)
return 1;
} }
} }
if (strncasecmp(query, "what is ", 8) == 0 || if (strncasecmp(query, "what is ", 8) == 0 ||
strncasecmp(query, "what's ", 7) == 0 || strncasecmp(query, "what's ", 7) == 0 ||
strncasecmp(query, "whats ", 6) == 0) { strncasecmp(query, "whats ", 6) == 0) {
const char *word = query + (strncasecmp(query, "what is ", 8) == 0 ? 8 : const char *word = query + (strncasecmp(query, "what is ", 8) == 0 ? 8
strncasecmp(query, "what's ", 7) == 0 ? 7 : 6); : strncasecmp(query, "what's ", 7) == 0 ? 7
const char *articles[] = {"the ", "your ", "my ", "his ", "her ", "their ", : 6);
"our ", "this ", "that ", "these ", "those ", "a ", "an ", NULL}; const char *articles[] = {"the ", "your ", "my ", "his ", "her ",
"their ", "our ", "this ", "that ", "these ",
"those ", "a ", "an ", NULL};
for (int i = 0; articles[i]; i++) { for (int i = 0; articles[i]; i++) {
if (strncasecmp(word, articles[i], strlen(articles[i])) == 0) return 0; if (strncasecmp(word, articles[i], strlen(articles[i])) == 0)
return 0;
} }
const char *space = strchr(word, ' '); const char *space = strchr(word, ' ');
if (!space || *(space + 1) == '\0' || *(space + 1) == '?') return 1; if (!space || *(space + 1) == '\0' || *(space + 1) == '?')
return 1;
} }
return 0; return 0;
@@ -184,10 +236,14 @@ int is_dictionary_query(const char *query) {
char *construct_dictionary_url(const char *query) { char *construct_dictionary_url(const char *query) {
char *word = extract_word(query); char *word = extract_word(query);
if (!word) return NULL; if (!word)
return NULL;
CURL *curl = curl_easy_init(); CURL *curl = curl_easy_init();
if (!curl) { free(word); return NULL; } if (!curl) {
free(word);
return NULL;
}
char *escaped = curl_easy_escape(curl, word, 0); char *escaped = curl_easy_escape(curl, word, 0);
const char *base = "https://dictionary.cambridge.org/dictionary/english/"; const char *base = "https://dictionary.cambridge.org/dictionary/english/";
@@ -207,10 +263,14 @@ InfoBox fetch_dictionary_data(const char *query) {
InfoBox info = {NULL, NULL, NULL, NULL}; InfoBox info = {NULL, NULL, NULL, NULL};
char *url = construct_dictionary_url(query); char *url = construct_dictionary_url(query);
if (!url) return info; if (!url)
return info;
CURL *curl = curl_easy_init(); CURL *curl = curl_easy_init();
if (!curl) { free(url); return info; } if (!curl) {
free(url);
return info;
}
struct MemStruct chunk = {malloc(1), 0}; struct MemStruct chunk = {malloc(1), 0};
curl_easy_setopt(curl, CURLOPT_URL, url); curl_easy_setopt(curl, CURLOPT_URL, url);
@@ -222,10 +282,13 @@ InfoBox fetch_dictionary_data(const char *query) {
if (curl_easy_perform(curl) == CURLE_OK && chunk.size > 0) { if (curl_easy_perform(curl) == CURLE_OK && chunk.size > 0) {
htmlDocPtr doc = htmlReadMemory(chunk.memory, chunk.size, url, NULL, htmlDocPtr doc = htmlReadMemory(chunk.memory, chunk.size, url, NULL,
HTML_PARSE_RECOVER | HTML_PARSE_NOERROR | HTML_PARSE_NOWARNING); HTML_PARSE_RECOVER | HTML_PARSE_NOERROR |
HTML_PARSE_NOWARNING);
if (doc) { if (doc) {
char *word = xpath_text(doc, "//span[@class='hw dhw']"); char *word = xpath_text(doc, "//span[@class='hw dhw']");
char *pron = xpath_text(doc, "//span[@class='us dpron-i']//span[@class='ipa dipa lpr-2 lpl-1']"); char *pron = xpath_text(
doc,
"//span[@class='us dpron-i']//span[@class='ipa dipa lpr-2 lpl-1']");
char *pos = xpath_text(doc, "//span[@class='pos dpos']"); char *pos = xpath_text(doc, "//span[@class='pos dpos']");
char *def = xpath_text(doc, "(//div[@class='def ddef_d db'])[1]"); char *def = xpath_text(doc, "(//div[@class='def ddef_d db'])[1]");
char *ex = xpath_text(doc, "(//span[@class='eg deg'])[1]"); char *ex = xpath_text(doc, "(//span[@class='eg deg'])[1]");
@@ -237,7 +300,11 @@ InfoBox fetch_dictionary_data(const char *query) {
info.url = strdup(url); info.url = strdup(url);
} }
free(word); free(pron); free(pos); free(def); free(ex); free(word);
free(pron);
free(pos);
free(def);
free(ex);
xmlFreeDoc(doc); xmlFreeDoc(doc);
} }
} }
@@ -246,4 +313,4 @@ InfoBox fetch_dictionary_data(const char *query) {
free(chunk.memory); free(chunk.memory);
free(url); free(url);
return info; return info;
} }

2
src/Infobox/Dictionary.h
View File

@@ -7,4 +7,4 @@ InfoBox fetch_dictionary_data(const char *word);
char *construct_dictionary_url(const char *word); char *construct_dictionary_url(const char *word);
int is_dictionary_query(const char *query); int is_dictionary_query(const char *query);
#endif #endif

633
src/Infobox/UnitConversion.c
View File

@@ -23,49 +23,73 @@ typedef struct {
} UnitDef; } UnitDef;
static const UnitDef UNITS[] = { static const UnitDef UNITS[] = {
{"metre", {"m", "metres", "meter", "meters"}, UNIT_LENGTH, 1.0}, {"metre", {"m", "metres", "meter", "meters"}, UNIT_LENGTH, 1.0},
{"kilometre", {"km", "kilometres", "kilometer", "kilometers"}, UNIT_LENGTH, 1000.0}, {"kilometre",
{"centimetre", {"cm", "centimetres", "centimeter", "centimeters"}, UNIT_LENGTH, 0.01}, {"km", "kilometres", "kilometer", "kilometers"},
{"millimetre", {"mm", "millimetres", "millimeter", "millimeters"}, UNIT_LENGTH, 0.001}, UNIT_LENGTH,
{"mile", {"mi", "miles"}, UNIT_LENGTH, 1609.344}, 1000.0},
{"yard", {"yd", "yards"}, UNIT_LENGTH, 0.9144}, {"centimetre",
{"foot", {"ft", "feet", "'"}, UNIT_LENGTH, 0.3048}, {"cm", "centimetres", "centimeter", "centimeters"},
{"inch", {"in", "inches", "\""}, UNIT_LENGTH, 0.0254}, UNIT_LENGTH,
0.01},
{"millimetre",
{"mm", "millimetres", "millimeter", "millimeters"},
UNIT_LENGTH,
0.001},
{"mile", {"mi", "miles"}, UNIT_LENGTH, 1609.344},
{"yard", {"yd", "yards"}, UNIT_LENGTH, 0.9144},
{"foot", {"ft", "feet", "'"}, UNIT_LENGTH, 0.3048},
{"inch", {"in", "inches", "\""}, UNIT_LENGTH, 0.0254},
{"kilogram", {"kg", "kilograms", "kilo", "kilos"}, UNIT_WEIGHT, 1.0}, {"kilogram", {"kg", "kilograms", "kilo", "kilos"}, UNIT_WEIGHT, 1.0},
{"gram", {"g", "grams"}, UNIT_WEIGHT, 0.001}, {"gram", {"g", "grams"}, UNIT_WEIGHT, 0.001},
{"milligram", {"mg", "milligrams"}, UNIT_WEIGHT, 0.000001}, {"milligram", {"mg", "milligrams"}, UNIT_WEIGHT, 0.000001},
{"pound", {"lb", "lbs", "pounds"}, UNIT_WEIGHT, 0.453592}, {"pound", {"lb", "lbs", "pounds"}, UNIT_WEIGHT, 0.453592},
{"ounce", {"oz", "ounces"}, UNIT_WEIGHT, 0.0283495}, {"ounce", {"oz", "ounces"}, UNIT_WEIGHT, 0.0283495},
{"tonne", {"tonnes", "tons", "ton"}, UNIT_WEIGHT, 1000.0}, {"tonne", {"tonnes", "tons", "ton"}, UNIT_WEIGHT, 1000.0},
{"stone", {"st", "stones"}, UNIT_WEIGHT, 6.35029}, {"stone", {"st", "stones"}, UNIT_WEIGHT, 6.35029},
{"celsius", {"c", "°c", "degrees celsius", "degrees c"}, UNIT_TEMP, 1.0}, {"celsius", {"c", "°c", "degrees celsius", "degrees c"}, UNIT_TEMP, 1.0},
{"fahrenheit", {"f", "°f", "degrees fahrenheit", "degrees f"}, UNIT_TEMP, 1.0}, {"fahrenheit",
{"kelvin", {"k", "degrees kelvin", "degrees k"}, UNIT_TEMP, 1.0}, {"f", "°f", "degrees fahrenheit", "degrees f"},
UNIT_TEMP,
1.0},
{"kelvin", {"k", "degrees kelvin", "degrees k"}, UNIT_TEMP, 1.0},
{"litre", {"l", "litres", "liter", "liters"}, UNIT_VOLUME, 1.0}, {"litre", {"l", "litres", "liter", "liters"}, UNIT_VOLUME, 1.0},
{"millilitre", {"ml", "millilitres", "milliliter", "milliliters"}, UNIT_VOLUME, 0.001}, {"millilitre",
{"gallon", {"gal", "gallons"}, UNIT_VOLUME, 3.78541}, {"ml", "millilitres", "milliliter", "milliliters"},
{"quart", {"qt", "quarts"}, UNIT_VOLUME, 0.946353}, UNIT_VOLUME,
{"pint", {"pt", "pints"}, UNIT_VOLUME, 0.473176}, 0.001},
{"cup", {"cups"}, UNIT_VOLUME, 0.236588}, {"gallon", {"gal", "gallons"}, UNIT_VOLUME, 3.78541},
{"fluid ounce", {"fl oz", "fluid ounces"}, UNIT_VOLUME, 0.0295735}, {"quart", {"qt", "quarts"}, UNIT_VOLUME, 0.946353},
{"pint", {"pt", "pints"}, UNIT_VOLUME, 0.473176},
{"cup", {"cups"}, UNIT_VOLUME, 0.236588},
{"fluid ounce", {"fl oz", "fluid ounces"}, UNIT_VOLUME, 0.0295735},
{"square metre", {"sqm", "sq m", "m2", "square metres"}, UNIT_AREA, 1.0}, {"square metre", {"sqm", "sq m", "m2", "square metres"}, UNIT_AREA, 1.0},
{"square foot", {"sqft", "sq ft", "ft2", "square feet"}, UNIT_AREA, 0.092903}, {"square foot",
{"square kilometre", {"sqkm", "sq km", "km2", "square kilometres"}, UNIT_AREA, 1000000.0}, {"sqft", "sq ft", "ft2", "square feet"},
{"square mile", {"sqmi", "sq mi", "mi2", "square miles"}, UNIT_AREA, 2589988.0}, UNIT_AREA,
{"acre", {"acres"}, UNIT_AREA, 4046.86}, 0.092903},
{"hectare", {"ha", "hectares"}, UNIT_AREA, 10000.0}, {"square kilometre",
{"sqkm", "sq km", "km2", "square kilometres"},
UNIT_AREA,
1000000.0},
{"square mile",
{"sqmi", "sq mi", "mi2", "square miles"},
UNIT_AREA,
2589988.0},
{"acre", {"acres"}, UNIT_AREA, 4046.86},
{"hectare", {"ha", "hectares"}, UNIT_AREA, 10000.0},
{"second", {"sec", "seconds", "s"}, UNIT_TIME, 1.0}, {"second", {"sec", "seconds", "s"}, UNIT_TIME, 1.0},
{"minute", {"min", "minutes"}, UNIT_TIME, 60.0}, {"minute", {"min", "minutes"}, UNIT_TIME, 60.0},
{"hour", {"hr", "hours", "h"}, UNIT_TIME, 3600.0}, {"hour", {"hr", "hours", "h"}, UNIT_TIME, 3600.0},
{"day", {"days", "d"}, UNIT_TIME, 86400.0}, {"day", {"days", "d"}, UNIT_TIME, 86400.0},
{"week", {"weeks", "wk"}, UNIT_TIME, 604800.0}, {"week", {"weeks", "wk"}, UNIT_TIME, 604800.0},
{"month", {"months", "mo"}, UNIT_TIME, 2629746.0}, {"month", {"months", "mo"}, UNIT_TIME, 2629746.0},
{"year", {"years", "yr"}, UNIT_TIME, 31556952.0}, {"year", {"years", "yr"}, UNIT_TIME, 31556952.0},
}; };
static const int UNIT_COUNT = sizeof(UNITS) / sizeof(UNITS[0]); static const int UNIT_COUNT = sizeof(UNITS) / sizeof(UNITS[0]);
@@ -75,70 +99,73 @@ static int is_whitespace(char c) {
} }
static const UnitDef *find_unit(const char *str) { static const UnitDef *find_unit(const char *str) {
if (!str || !*str) return NULL; if (!str || !*str)
return NULL;
size_t len = strlen(str); size_t len = strlen(str);
char normalized[64] = {0}; char normalized[64] = {0};
size_t j = 0; size_t j = 0;
for (size_t i = 0; i < len && j < 63; i++) { for (size_t i = 0; i < len && j < 63; i++) {
if ((unsigned char)str[i] == 0xC2 && (unsigned char)str[i+1] == 0xB0) { if ((unsigned char)str[i] == 0xC2 && (unsigned char)str[i + 1] == 0xB0) {
i++; i++;
continue; continue;
} }
if (str[i] == '^' && i + 1 < len && str[i + 1] == '2') { if (str[i] == '^' && i + 1 < len && str[i + 1] == '2') {
normalized[j++] = '2'; normalized[j++] = '2';
i++; i++;
continue; continue;
} }
normalized[j++] = tolower((unsigned char)str[i]); normalized[j++] = tolower((unsigned char)str[i]);
} }
normalized[j] = '\0'; normalized[j] = '\0';
for (int i = 0; i < UNIT_COUNT; i++) { for (int i = 0; i < UNIT_COUNT; i++) {
if (strcmp(normalized, UNITS[i].name) == 0) return &UNITS[i]; if (strcmp(normalized, UNITS[i].name) == 0)
for (int k = 0; k < 4 && UNITS[i].alias[k]; k++) { return &UNITS[i];
if (strcmp(normalized, UNITS[i].alias[k]) == 0) return &UNITS[i]; for (int k = 0; k < 4 && UNITS[i].alias[k]; k++) {
} if (strcmp(normalized, UNITS[i].alias[k]) == 0)
return &UNITS[i];
}
} }
return NULL; return NULL;
} }
int is_unit_conv_query(const char *query) { int is_unit_conv_query(const char *query) {
if (!query) return 0; if (!query)
return 0;
const char *patterns[] = { const char *patterns[] = {" to ", " in ", " into ", " = ",
" to ", " in ", " into ", " equals ", " equal ", " convert ", " conversion ",
" = ", " equals ", " equal ", " -> ", " → ", NULL};
" convert ", " conversion ",
" -> ", " → ",
NULL
};
int has_pattern = 0; int has_pattern = 0;
for (int i = 0; patterns[i]; i++) { for (int i = 0; patterns[i]; i++) {
if (strstr(query, patterns[i])) { if (strstr(query, patterns[i])) {
has_pattern = 1; has_pattern = 1;
break; break;
} }
} }
if (!has_pattern) { if (!has_pattern) {
const char *last_space = strrchr(query, ' '); const char *last_space = strrchr(query, ' ');
if (last_space) { if (last_space) {
const UnitDef *u = find_unit(last_space + 1); const UnitDef *u = find_unit(last_space + 1);
if (u) { if (u) {
const char *before = query; const char *before = query;
while (*before && is_whitespace(*before)) before++; while (*before && is_whitespace(*before))
const char *num_end = before; before++;
while (*num_end && const char *num_end = before;
(isdigit(*num_end) || *num_end == '.' || *num_end == '-' || while (*num_end &&
*num_end == '+' || *num_end == '/' || *num_end == '\'' || *num_end == '"')) { (isdigit(*num_end) || *num_end == '.' || *num_end == '-' ||
num_end++; *num_end == '+' || *num_end == '/' || *num_end == '\'' ||
*num_end == '"')) {
num_end++;
}
if (num_end > before)
has_pattern = 1;
}
} }
if (num_end > before) has_pattern = 1;
}
}
} }
return has_pattern; return has_pattern;
@@ -146,65 +173,68 @@ int is_unit_conv_query(const char *query) {
static double parse_value(const char **ptr) { static double parse_value(const char **ptr) {
const char *p = *ptr; const char *p = *ptr;
while (*p && is_whitespace(*p)) p++; while (*p && is_whitespace(*p))
p++;
double value = 0.0; double value = 0.0;
int has_num = 0; int has_num = 0;
if (*p == '-' || *p == '+') p++; if (*p == '-' || *p == '+')
p++;
while (*p >= '0' && *p <= '9') { while (*p >= '0' && *p <= '9') {
value = value * 10 + (*p - '0'); value = value * 10 + (*p - '0');
has_num = 1;
p++;
}
if (*p == '.') {
p++;
double frac = 0.1;
while (*p >= '0' && *p <= '9') {
value += (*p - '0') * frac;
frac *= 0.1;
has_num = 1; has_num = 1;
p++; p++;
} }
}
if (*p == '/' && has_num) {
p++;
double denom = 0.0;
int has_denom = 0;
while (*p >= '0' && *p <= '9') {
denom = denom * 10 + (*p - '0');
has_denom = 1;
p++;
}
if (has_denom && denom > 0) {
value = value / denom;
}
}
while (*p == '\'' || *p == '"') {
double extra = 0.0;
p++;
while (*p >= '0' && *p <= '9') {
extra = extra * 10 + (*p - '0');
p++;
}
if (*p == '.') { if (*p == '.') {
p++; p++;
double frac = 0.1; double frac = 0.1;
while (*p >= '0' && *p <= '9') { while (*p >= '0' && *p <= '9') {
extra += (*p - '0') * frac; value += (*p - '0') * frac;
frac *= 0.1; frac *= 0.1;
p++; has_num = 1;
p++;
} }
} }
if (*p == '\'' || *p == '"') p++;
value += extra * (p[-1] == '\'' ? 0.3048 : 0.0254); if (*p == '/' && has_num) {
p++;
double denom = 0.0;
int has_denom = 0;
while (*p >= '0' && *p <= '9') {
denom = denom * 10 + (*p - '0');
has_denom = 1;
p++;
}
if (has_denom && denom > 0) {
value = value / denom;
}
}
while (*p == '\'' || *p == '"') {
double extra = 0.0;
p++;
while (*p >= '0' && *p <= '9') {
extra = extra * 10 + (*p - '0');
p++;
}
if (*p == '.') {
p++;
double frac = 0.1;
while (*p >= '0' && *p <= '9') {
extra += (*p - '0') * frac;
frac *= 0.1;
p++;
}
}
if (*p == '\'' || *p == '"')
p++;
value += extra * (p[-1] == '\'' ? 0.3048 : 0.0254);
} }
if (!has_num) { if (!has_num) {
*ptr = p; *ptr = p;
return 0.0; return 0.0;
} }
*ptr = p; *ptr = p;
@@ -212,10 +242,13 @@ static double parse_value(const char **ptr) {
} }
static int is_separator(char c) { static int is_separator(char c) {
return is_whitespace(c) || c == ',' || c == '.' || c == '(' || c == ')' || c == '\0'; return is_whitespace(c) || c == ',' || c == '.' || c == '(' || c == ')' ||
c == '\0';
} }
static int parse_conversion_query(const char *query, double *value, const UnitDef **from_unit, const UnitDef **to_unit) { static int parse_conversion_query(const char *query, double *value,
const UnitDef **from_unit,
const UnitDef **to_unit) {
*value = 0; *value = 0;
*from_unit = NULL; *from_unit = NULL;
*to_unit = NULL; *to_unit = NULL;
@@ -223,127 +256,151 @@ static int parse_conversion_query(const char *query, double *value, const UnitDe
const char *value_end = query; const char *value_end = query;
*value = parse_value(&value_end); *value = parse_value(&value_end);
if (value_end == query) return 0; if (value_end == query)
return 0;
const char *p = value_end; const char *p = value_end;
while (*p && is_whitespace(*p)) p++; while (*p && is_whitespace(*p))
p++;
size_t remaining = strlen(p); size_t remaining = strlen(p);
if (remaining < 2) return 0; if (remaining < 2)
return 0;
const char *to_keywords[] = {" to ", " in ", " into ", " -> ", " → ", " = ", NULL}; const char *to_keywords[] = {" to ", " in ", " into ", " -> ",
" → ", " = ", NULL};
const char *to_pos = NULL; const char *to_pos = NULL;
size_t keyword_len = 0; size_t keyword_len = 0;
for (int i = 0; to_keywords[i]; i++) { for (int i = 0; to_keywords[i]; i++) {
const char *found = strstr(p, to_keywords[i]); const char *found = strstr(p, to_keywords[i]);
if (found) { if (found) {
to_pos = found + strlen(to_keywords[i]); to_pos = found + strlen(to_keywords[i]);
keyword_len = strlen(to_keywords[i]); keyword_len = strlen(to_keywords[i]);
break; break;
} }
} }
if (!to_pos) { if (!to_pos) {
const char *last_space = strrchr(p, ' '); const char *last_space = strrchr(p, ' ');
if (last_space && last_space > p) { if (last_space && last_space > p) {
char from_part[64] = {0}; char from_part[64] = {0};
size_t len = last_space - p; size_t len = last_space - p;
if (len < 63) { if (len < 63) {
strncpy(from_part, p, len); strncpy(from_part, p, len);
*from_unit = find_unit(from_part); *from_unit = find_unit(from_part);
if (*from_unit) { if (*from_unit) {
*to_unit = find_unit(last_space + 1); *to_unit = find_unit(last_space + 1);
return *to_unit ? 1 : 0; return *to_unit ? 1 : 0;
}
}
} }
} return 0;
}
return 0;
} }
char from_part[64] = {0}; char from_part[64] = {0};
size_t from_len = to_pos - p - keyword_len; size_t from_len = to_pos - p - keyword_len;
if (from_len > 63) from_len = 63; if (from_len > 63)
from_len = 63;
strncpy(from_part, p, from_len); strncpy(from_part, p, from_len);
char *end_from = from_part + from_len; char *end_from = from_part + from_len;
while (end_from > from_part && is_whitespace(end_from[-1])) end_from--; while (end_from > from_part && is_whitespace(end_from[-1]))
end_from--;
*end_from = '\0'; *end_from = '\0';
*from_unit = find_unit(from_part); *from_unit = find_unit(from_part);
if (!*from_unit) { if (!*from_unit) {
char *end = from_part + strlen(from_part); char *end = from_part + strlen(from_part);
while (end > from_part) { while (end > from_part) {
while (end > from_part && is_whitespace(end[-1])) end--; while (end > from_part && is_whitespace(end[-1]))
if (end <= from_part) break; end--;
char *start = end; if (end <= from_part)
while (start > from_part && !is_whitespace(start[-1])) start--; break;
size_t word_len = end - start; char *start = end;
memmove(from_part + word_len + 1, from_part, start - from_part); while (start > from_part && !is_whitespace(start[-1]))
from_part[word_len] = ' '; start--;
from_part[word_len + 1] = '\0'; size_t word_len = end - start;
*from_unit = find_unit(from_part); memmove(from_part + word_len + 1, from_part, start - from_part);
if (*from_unit) break; from_part[word_len] = ' ';
end = start; from_part[word_len + 1] = '\0';
} *from_unit = find_unit(from_part);
if (*from_unit)
break;
end = start;
}
} }
if (!*from_unit) return 0; if (!*from_unit)
return 0;
while (*to_pos && is_whitespace(*to_pos)) to_pos++; while (*to_pos && is_whitespace(*to_pos))
to_pos++;
if (!*to_pos) return 0; if (!*to_pos)
return 0;
char to_part[64] = {0}; char to_part[64] = {0};
size_t to_len = 0; size_t to_len = 0;
const char *tp = to_pos; const char *tp = to_pos;
while (*tp && !is_separator(*tp) && to_len < 63) { while (*tp && !is_separator(*tp) && to_len < 63) {
to_part[to_len++] = *tp++; to_part[to_len++] = *tp++;
} }
to_part[to_len] = '\0'; to_part[to_len] = '\0';
*to_unit = find_unit(to_part); *to_unit = find_unit(to_part);
if (!*to_unit) { if (!*to_unit) {
const char *try_ptr = to_pos; const char *try_ptr = to_pos;
while (*try_ptr && is_whitespace(*try_ptr)) try_ptr++; while (*try_ptr && is_whitespace(*try_ptr))
char try_buf[64] = {0}; try_ptr++;
size_t try_len = 0; char try_buf[64] = {0};
while (*try_ptr && try_len < 63) { size_t try_len = 0;
try_buf[try_len++] = *try_ptr++; while (*try_ptr && try_len < 63) {
} try_buf[try_len++] = *try_ptr++;
while (try_len > 0) { }
*to_unit = find_unit(try_buf); while (try_len > 0) {
if (*to_unit) { *to_unit = find_unit(try_buf);
strcpy(to_part, try_buf); if (*to_unit) {
break; strcpy(to_part, try_buf);
break;
}
char *last_space = strrchr(try_buf, ' ');
if (!last_space)
break;
*last_space = '\0';
try_len = strlen(try_buf);
} }
char *last_space = strrchr(try_buf, ' ');
if (!last_space) break;
*last_space = '\0';
try_len = strlen(try_buf);
}
} }
return *to_unit ? 1 : 0; return *to_unit ? 1 : 0;
} }
static double convert_temp(double value, const UnitDef *from, const UnitDef *to) { static double convert_temp(double value, const UnitDef *from,
const UnitDef *to) {
double celsius = 0; double celsius = 0;
if (strcmp(from->name, "celsius") == 0) celsius = value; if (strcmp(from->name, "celsius") == 0)
else if (strcmp(from->name, "fahrenheit") == 0) celsius = (value - 32) * 5.0 / 9.0; celsius = value;
else if (strcmp(from->name, "kelvin") == 0) celsius = value - 273.15; else if (strcmp(from->name, "fahrenheit") == 0)
celsius = (value - 32) * 5.0 / 9.0;
else if (strcmp(from->name, "kelvin") == 0)
celsius = value - 273.15;
if (strcmp(to->name, "celsius") == 0) return celsius; if (strcmp(to->name, "celsius") == 0)
else if (strcmp(to->name, "fahrenheit") == 0) return celsius * 9.0 / 5.0 + 32; return celsius;
else if (strcmp(to->name, "kelvin") == 0) return celsius + 273.15; else if (strcmp(to->name, "fahrenheit") == 0)
return celsius * 9.0 / 5.0 + 32;
else if (strcmp(to->name, "kelvin") == 0)
return celsius + 273.15;
return 0; return 0;
} }
static double convert_value(double value, const UnitDef *from, const UnitDef *to) { static double convert_value(double value, const UnitDef *from,
if (from->type != to->type) return 0; const UnitDef *to) {
if (from->type != to->type)
return 0;
if (from->type == UNIT_TEMP) { if (from->type == UNIT_TEMP) {
return convert_temp(value, from, to); return convert_temp(value, from, to);
} }
double base_value = value * from->to_base; double base_value = value * from->to_base;
@@ -351,112 +408,124 @@ static double convert_value(double value, const UnitDef *from, const UnitDef *to
} }
static void format_number(double val, char *buf, size_t bufsize) { static void format_number(double val, char *buf, size_t bufsize) {
if (bufsize == 0) return; if (bufsize == 0)
return;
if (val == 0) { if (val == 0) {
snprintf(buf, bufsize, "0"); snprintf(buf, bufsize, "0");
return; return;
} }
if (fabs(val) < 0.01 && fabs(val) > 0) { if (fabs(val) < 0.01 && fabs(val) > 0) {
snprintf(buf, bufsize, "%.2g", val); snprintf(buf, bufsize, "%.2g", val);
} else if (fabs(val) < 1) { } else if (fabs(val) < 1) {
snprintf(buf, bufsize, "%.2f", val); snprintf(buf, bufsize, "%.2f", val);
char *p = buf + strlen(buf) - 1; char *p = buf + strlen(buf) - 1;
while (p > buf && *p == '0') *p-- = '\0'; while (p > buf && *p == '0')
if (*p == '.') *p = '\0'; *p-- = '\0';
if (*p == '.')
*p = '\0';
} else if (fmod(val + 0.0001, 1.0) < 0.0002) { } else if (fmod(val + 0.0001, 1.0) < 0.0002) {
snprintf(buf, bufsize, "%.0f", val); snprintf(buf, bufsize, "%.0f", val);
} else { } else {
snprintf(buf, bufsize, "%.2f", val); snprintf(buf, bufsize, "%.2f", val);
char *p = buf + strlen(buf) - 1; char *p = buf + strlen(buf) - 1;
while (p > buf && *p == '0') *p-- = '\0'; while (p > buf && *p == '0')
if (*p == '.') *p = '\0'; *p-- = '\0';
if (*p == '.')
*p = '\0';
} }
} }
static const char *pluralize(const char *unit, double value, char *buf, size_t bufsize) { static const char *pluralize(const char *unit, double value, char *buf,
size_t bufsize) {
int is_one = (fabs(value - 1.0) < 0.0001 || fabs(value + 1.0) < 0.0001); int is_one = (fabs(value - 1.0) < 0.0001 || fabs(value + 1.0) < 0.0001);
size_t len = strlen(unit); size_t len = strlen(unit);
if (len == 0 || bufsize == 0) return unit; if (len == 0 || bufsize == 0)
return unit;
strncpy(buf, unit, bufsize - 1); strncpy(buf, unit, bufsize - 1);
buf[bufsize - 1] = '\0'; buf[bufsize - 1] = '\0';
if (strcmp(unit, "foot") == 0 || strcmp(unit, "square foot") == 0) { if (strcmp(unit, "foot") == 0 || strcmp(unit, "square foot") == 0) {
if (is_one) strcpy(buf, unit); if (is_one)
else strcpy(buf, strcmp(unit, "square foot") == 0 ? "square feet" : "feet"); strcpy(buf, unit);
return buf; else
strcpy(buf, strcmp(unit, "square foot") == 0 ? "square feet" : "feet");
return buf;
} }
if (strcmp(unit, "inch") == 0 || strcmp(unit, "square inch") == 0) { if (strcmp(unit, "inch") == 0 || strcmp(unit, "square inch") == 0) {
if (is_one) strcpy(buf, unit); if (is_one)
else strcpy(buf, strcmp(unit, "square inch") == 0 ? "square inches" : "inches"); strcpy(buf, unit);
return buf; else
strcpy(buf,
strcmp(unit, "square inch") == 0 ? "square inches" : "inches");
return buf;
} }
if (strcmp(unit, "stone") == 0) { if (strcmp(unit, "stone") == 0) {
if (is_one) strcpy(buf, "stone"); if (is_one)
else strcpy(buf, "stones"); strcpy(buf, "stone");
return buf; else
strcpy(buf, "stones");
return buf;
} }
if (strcmp(unit, "celsius") == 0 || if (strcmp(unit, "celsius") == 0 || strcmp(unit, "fahrenheit") == 0 ||
strcmp(unit, "fahrenheit") == 0 || strcmp(unit, "kelvin") == 0) {
strcmp(unit, "kelvin") == 0) { strcpy(buf, unit);
strcpy(buf, unit); return buf;
return buf;
} }
if (unit[len-1] == 's' || if (unit[len - 1] == 's' || unit[len - 1] == 'x' || unit[len - 1] == 'z' ||
unit[len-1] == 'x' || (len >= 2 && unit[len - 2] == 'c' && unit[len - 1] == 'h') ||
unit[len-1] == 'z' || (len >= 2 && unit[len - 2] == 's' && unit[len - 1] == 'h')) {
(len >= 2 && unit[len-2] == 'c' && unit[len-1] == 'h') || if (!is_one) {
(len >= 2 && unit[len-2] == 's' && unit[len-1] == 'h')) { buf[len] = 'e';
if (!is_one) { buf[len + 1] = '\0';
buf[len] = 'e'; }
buf[len+1] = '\0'; } else if (unit[len - 1] == 'y' && len >= 2 &&
} !(unit[len - 2] == 'a' || unit[len - 2] == 'e' ||
} else if (unit[len-1] == 'y' && len >= 2 && unit[len - 2] == 'i' || unit[len - 2] == 'o' ||
!(unit[len-2] == 'a' || unit[len-2] == 'e' || unit[len - 2] == 'u')) {
unit[len-2] == 'i' || unit[len-2] == 'o' || if (is_one) {
unit[len-2] == 'u')) { buf[len - 1] = '\0';
if (is_one) { } else {
buf[len-1] = '\0'; buf[len] = 's';
buf[len + 1] = '\0';
}
} else if (len >= 2 && unit[len - 2] == 'f' && unit[len - 1] == 'e') {
if (is_one) {
buf[len - 2] = '\0';
} else {
buf[len - 1] = 's';
buf[len] = '\0';
}
} else if (unit[len - 1] == 'f' && len >= 1) {
if (is_one) {
buf[len - 1] = '\0';
} else {
buf[len - 1] = 'v';
buf[len] = 'e';
buf[len + 1] = 's';
buf[len + 2] = '\0';
}
} else if (unit[len - 1] == 'e' && len >= 2 && unit[len - 2] == 'f') {
if (is_one) {
buf[len - 2] = '\0';
} else {
buf[len - 1] = 's';
buf[len] = '\0';
}
} else { } else {
buf[len] = 's'; if (!is_one) {
buf[len+1] = '\0'; buf[len] = 's';
} buf[len + 1] = '\0';
} else if (len >= 2 && unit[len-2] == 'f' && unit[len-1] == 'e') { }
if (is_one) {
buf[len-2] = '\0';
} else {
buf[len-1] = 's';
buf[len] = '\0';
}
} else if (unit[len-1] == 'f' && len >= 1) {
if (is_one) {
buf[len-1] = '\0';
} else {
buf[len-1] = 'v';
buf[len] = 'e';
buf[len+1] = 's';
buf[len+2] = '\0';
}
} else if (unit[len-1] == 'e' && len >= 2 && unit[len-2] == 'f') {
if (is_one) {
buf[len-2] = '\0';
} else {
buf[len-1] = 's';
buf[len] = '\0';
}
} else {
if (!is_one) {
buf[len] = 's';
buf[len+1] = '\0';
}
} }
return buf; return buf;
} }
static char *build_html(double value, const UnitDef *from, double result, const UnitDef *to) { static char *build_html(double value, const UnitDef *from, double result,
const UnitDef *to) {
static char html[4096]; static char html[4096];
char val_buf[64], res_buf[64], from_name_buf[64], to_name_buf[64]; char val_buf[64], res_buf[64], from_name_buf[64], to_name_buf[64];
format_number(value, val_buf, sizeof(val_buf)); format_number(value, val_buf, sizeof(val_buf));
@@ -466,30 +535,34 @@ static char *build_html(double value, const UnitDef *from, double result, const
pluralize(to->name, result, to_name_buf, sizeof(to_name_buf)); pluralize(to->name, result, to_name_buf, sizeof(to_name_buf));
int n = snprintf(html, sizeof(html), int n = snprintf(html, sizeof(html),
"<div class='unit-conv-container' style='line-height: 1.6;'>" "<div class='unit-conv-container' style='line-height: 1.6;'>"
"<div style='font-size: 1.3em; margin-bottom: 8px;'>" "<div style='font-size: 1.3em; margin-bottom: 8px;'>"
"<b>%s %s</b> = <b>%s %s</b>" "<b>%s %s</b> = <b>%s %s</b>"
"</div>", "</div>",
val_buf, from_name_buf, val_buf, from_name_buf, res_buf, to_name_buf);
res_buf, to_name_buf);
snprintf(html + n, sizeof(html) - n, "</div>"); snprintf(html + n, sizeof(html) - n, "</div>");
return html; return html;
} }
InfoBox fetch_unit_conv_data(const char *query) { InfoBox fetch_unit_conv_data(const char *query) {
InfoBox info = {NULL, NULL, NULL, NULL}; InfoBox info = {NULL, NULL, NULL, NULL};
if (!query) return info; if (!query)
return info;
double value = 0; double value = 0;
const UnitDef *from = NULL; const UnitDef *from = NULL;
const UnitDef *to = NULL; const UnitDef *to = NULL;
if (!parse_conversion_query(query, &value, &from, &to)) return info; if (!parse_conversion_query(query, &value, &from, &to))
if (!from || !to) return info; return info;
if (from->type != to->type) return info; if (!from || !to)
return info;
if (from->type != to->type)
return info;
double result = convert_value(value, from, to); double result = convert_value(value, from, to);
if (result == 0 && value != 0 && from->type != UNIT_TEMP) return info; if (result == 0 && value != 0 && from->type != UNIT_TEMP)
return info;
info.title = strdup("Unit Conversion"); info.title = strdup("Unit Conversion");
info.extract = strdup(build_html(value, from, result, to)); info.extract = strdup(build_html(value, from, result, to));

149
src/Infobox/Wikipedia.c
View File

@@ -14,41 +14,43 @@ struct WikiMemoryStruct {
}; };
static void shorten_summary(char **extract_ptr, int max_chars) { static void shorten_summary(char **extract_ptr, int max_chars) {
if (!extract_ptr || !*extract_ptr) return; if (!extract_ptr || !*extract_ptr)
return;
char *text = *extract_ptr; char *text = *extract_ptr;
int len = strlen(text); int len = strlen(text);
if (len <= max_chars) return; if (len <= max_chars)
return;
int end_pos = max_chars; int end_pos = max_chars;
for (int i = max_chars; i > (max_chars / 2); i--) { for (int i = max_chars; i > (max_chars / 2); i--) {
if (text[i] == '.' || text[i] == '!' || text[i] == '?') { if (text[i] == '.' || text[i] == '!' || text[i] == '?') {
end_pos = i + 1; end_pos = i + 1;
break; break;
} }
} }
char *new_text = (char *)malloc(end_pos + 4); char *new_text = (char *)malloc(end_pos + 4);
if (new_text) { if (new_text) {
strncpy(new_text, text, end_pos); strncpy(new_text, text, end_pos);
new_text[end_pos] = '\0'; new_text[end_pos] = '\0';
strcat(new_text, "..."); strcat(new_text, "...");
free(*extract_ptr); free(*extract_ptr);
*extract_ptr = new_text; *extract_ptr = new_text;
} }
} }
static size_t WikiWriteMemoryCallback(void *contents, size_t size, size_t nmemb, static size_t WikiWriteMemoryCallback(void *contents, size_t size, size_t nmemb,
void *userp) { void *userp) {
size_t realsize = size * nmemb; size_t realsize = size * nmemb;
struct WikiMemoryStruct *mem = (struct WikiMemoryStruct *)userp; struct WikiMemoryStruct *mem = (struct WikiMemoryStruct *)userp;
char *ptr = realloc(mem->memory, mem->size + realsize + 1); char *ptr = realloc(mem->memory, mem->size + realsize + 1);
if (ptr == NULL) { if (ptr == NULL) {
fprintf(stderr, "Not enough memory (realloc returned NULL)\n"); fprintf(stderr, "Not enough memory (realloc returned NULL)\n");
return 0; return 0;
} }
mem->memory = ptr; mem->memory = ptr;
@@ -63,48 +65,49 @@ static void extract_wiki_info(xmlNode *node, InfoBox *info) {
xmlNode *cur_node = NULL; xmlNode *cur_node = NULL;
for (cur_node = node; cur_node; cur_node = cur_node->next) { for (cur_node = node; cur_node; cur_node = cur_node->next) {
if (cur_node->type == XML_ELEMENT_NODE) { if (cur_node->type == XML_ELEMENT_NODE) {
if (strcmp((const char *)cur_node->name, "page") == 0) { if (strcmp((const char *)cur_node->name, "page") == 0) {
xmlChar *title = xmlGetProp(cur_node, (const xmlChar *)"title"); xmlChar *title = xmlGetProp(cur_node, (const xmlChar *)"title");
if (title) { if (title) {
info->title = strdup((const char *)title); info->title = strdup((const char *)title);
const char *base_article_url = "https://en.wikipedia.org/wiki/"; const char *base_article_url = "https://en.wikipedia.org/wiki/";
char *formatted_title = strdup((const char *)title); char *formatted_title = strdup((const char *)title);
for (int i = 0; formatted_title[i]; i++) { for (int i = 0; formatted_title[i]; i++) {
if (formatted_title[i] == ' ') formatted_title[i] = '_'; if (formatted_title[i] == ' ')
formatted_title[i] = '_';
}
info->url =
malloc(strlen(base_article_url) + strlen(formatted_title) + 1);
if (info->url) {
strcpy(info->url, base_article_url);
strcat(info->url, formatted_title);
}
free(formatted_title);
xmlFree(title);
}
} }
info->url = if (strcmp((const char *)cur_node->name, "thumbnail") == 0) {
malloc(strlen(base_article_url) + strlen(formatted_title) + 1); xmlChar *source = xmlGetProp(cur_node, (const xmlChar *)"source");
if (info->url) { if (source) {
strcpy(info->url, base_article_url); info->thumbnail_url = strdup((const char *)source);
strcat(info->url, formatted_title); xmlFree(source);
}
} }
free(formatted_title);
xmlFree(title);
}
}
if (strcmp((const char *)cur_node->name, "thumbnail") == 0) { if (strcmp((const char *)cur_node->name, "extract") == 0) {
xmlChar *source = xmlGetProp(cur_node, (const xmlChar *)"source"); xmlChar *content = xmlNodeGetContent(cur_node);
if (source) { if (content) {
info->thumbnail_url = strdup((const char *)source); info->extract = strdup((const char *)content);
xmlFree(source);
}
}
if (strcmp((const char *)cur_node->name, "extract") == 0) { shorten_summary(&(info->extract), 300);
xmlChar *content = xmlNodeGetContent(cur_node); xmlFree(content);
if (content) { }
info->extract = strdup((const char *)content); }
shorten_summary(&(info->extract), 300);
xmlFree(content);
} }
} extract_wiki_info(cur_node->children, info);
}
extract_wiki_info(cur_node->children, info);
} }
} }
@@ -120,27 +123,27 @@ InfoBox fetch_wiki_data(char *api_url) {
curl_handle = curl_easy_init(); curl_handle = curl_easy_init();
if (curl_handle) { if (curl_handle) {
curl_easy_setopt(curl_handle, CURLOPT_URL, api_url); curl_easy_setopt(curl_handle, CURLOPT_URL, api_url);
curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION,
WikiWriteMemoryCallback); WikiWriteMemoryCallback);
curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, (void *)&chunk); curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, (void *)&chunk);
curl_easy_setopt(curl_handle, CURLOPT_USERAGENT, "libcurl-agent/1.0"); curl_easy_setopt(curl_handle, CURLOPT_USERAGENT, "libcurl-agent/1.0");
apply_proxy_settings(curl_handle); apply_proxy_settings(curl_handle);
res = curl_easy_perform(curl_handle); res = curl_easy_perform(curl_handle);
if (res == CURLE_OK) { if (res == CURLE_OK) {
xmlDocPtr doc = xmlDocPtr doc =
xmlReadMemory(chunk.memory, chunk.size, "noname.xml", NULL, 0); xmlReadMemory(chunk.memory, chunk.size, "noname.xml", NULL, 0);
if (doc != NULL) { if (doc != NULL) {
xmlNode *root_element = xmlDocGetRootElement(doc); xmlNode *root_element = xmlDocGetRootElement(doc);
extract_wiki_info(root_element, &info); extract_wiki_info(root_element, &info);
xmlFreeDoc(doc); xmlFreeDoc(doc);
}
} }
}
curl_easy_cleanup(curl_handle); curl_easy_cleanup(curl_handle);
free(chunk.memory); free(chunk.memory);
} }
return info; return info;
@@ -148,18 +151,18 @@ InfoBox fetch_wiki_data(char *api_url) {
char *construct_wiki_url(const char *search_term) { char *construct_wiki_url(const char *search_term) {
CURL *curl = curl_easy_init(); CURL *curl = curl_easy_init();
if (!curl) return NULL; if (!curl)
return NULL;
char *escaped_term = curl_easy_escape(curl, search_term, 0); char *escaped_term = curl_easy_escape(curl, search_term, 0);
const char *base = const char *base = "https://en.wikipedia.org/w/"
"https://en.wikipedia.org/w/" "api.php?action=query&prop=extracts|pageimages&exintro&"
"api.php?action=query&prop=extracts|pageimages&exintro&" "explaintext&pithumbsize=400&format=xml&origin=*&titles=";
"explaintext&pithumbsize=400&format=xml&origin=*&titles=";
char *full_url = malloc(strlen(base) + strlen(escaped_term) + 1); char *full_url = malloc(strlen(base) + strlen(escaped_term) + 1);
if (full_url) { if (full_url) {
strcpy(full_url, base); strcpy(full_url, base);
strcat(full_url, escaped_term); strcat(full_url, escaped_term);
} }
curl_free(escaped_term); curl_free(escaped_term);

53
src/Main.c
View File

@@ -7,15 +7,16 @@
#include "Config.h" #include "Config.h"
#include "Proxy/Proxy.h" #include "Proxy/Proxy.h"
#include "Scraping/Scraping.h"
#include "Routes/Home.h" #include "Routes/Home.h"
#include "Routes/Images.h"
#include "Routes/ImageProxy.h" #include "Routes/ImageProxy.h"
#include "Routes/Images.h"
#include "Routes/Search.h" #include "Routes/Search.h"
#include "Scraping/Scraping.h"
int handle_opensearch(UrlParams *params) { int handle_opensearch(UrlParams *params) {
(void)params; (void)params;
serve_static_file_with_mime("opensearch.xml", "application/opensearchdescription+xml"); serve_static_file_with_mime("opensearch.xml",
"application/opensearchdescription+xml");
return 0; return 0;
} }
@@ -30,33 +31,35 @@ int main() {
curl_global_init(CURL_GLOBAL_DEFAULT); curl_global_init(CURL_GLOBAL_DEFAULT);
Config config = { Config config = {.host = "0.0.0.0",
.host = "0.0.0.0", .port = 5000,
.port = 5000, .proxy = "",
.proxy = "", .proxy_list_file = "",
.proxy_list_file = "", .max_proxy_retries = 3,
.max_proxy_retries = 3, .randomize_username = 0,
.randomize_username = 0, .randomize_password = 0};
.randomize_password = 0
};
if (load_config("config.ini", &config) != 0) { if (load_config("config.ini", &config) != 0) {
fprintf(stderr, "Warning: Could not load config file, using defaults\n"); fprintf(stderr, "Warning: Could not load config file, using defaults\n");
} }
if (config.proxy_list_file[0] != '\0') { if (config.proxy_list_file[0] != '\0') {
if (load_proxy_list(config.proxy_list_file) < 0) { if (load_proxy_list(config.proxy_list_file) < 0) {
fprintf(stderr, "Warning: Failed to load proxy list, continuing without proxies\n"); fprintf(
} stderr,
"Warning: Failed to load proxy list, continuing without proxies\n");
}
} }
max_proxy_retries = config.max_proxy_retries; max_proxy_retries = config.max_proxy_retries;
set_proxy_config(config.proxy, config.randomize_username, config.randomize_password); set_proxy_config(config.proxy, config.randomize_username,
config.randomize_password);
if (proxy_url[0] != '\0') { if (proxy_url[0] != '\0') {
fprintf(stderr, "Using proxy: %s\n", proxy_url); fprintf(stderr, "Using proxy: %s\n", proxy_url);
} else if (proxy_count > 0) { } else if (proxy_count > 0) {
fprintf(stderr, "Using %d proxies from %s\n", proxy_count, config.proxy_list_file); fprintf(stderr, "Using %d proxies from %s\n", proxy_count,
config.proxy_list_file);
} }
set_handler("/", home_handler); set_handler("/", home_handler);
@@ -70,14 +73,14 @@ int main() {
int result = beaker_run(config.host, config.port); int result = beaker_run(config.host, config.port);
if (result != 0) { if (result != 0) {
fprintf(stderr, "Error: Beaker server failed to start.\n"); fprintf(stderr, "Error: Beaker server failed to start.\n");
curl_global_cleanup(); curl_global_cleanup();
xmlCleanupParser(); xmlCleanupParser();
return EXIT_FAILURE; return EXIT_FAILURE;
} }
curl_global_cleanup(); curl_global_cleanup();
xmlCleanupParser(); xmlCleanupParser();
free_proxy_list(); free_proxy_list();
return EXIT_SUCCESS; return EXIT_SUCCESS;
} }

278
src/Proxy/Proxy.c
View File

@@ -1,9 +1,9 @@
#include "Proxy.h" #include "Proxy.h"
#include <pthread.h>
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#include <string.h> #include <string.h>
#include <time.h> #include <time.h>
#include <pthread.h>
Proxy *proxy_list = NULL; Proxy *proxy_list = NULL;
int proxy_count = 0; int proxy_count = 0;
@@ -13,76 +13,85 @@ int randomize_password = 0;
char proxy_url[512] = {0}; char proxy_url[512] = {0};
static pthread_mutex_t proxy_mutex = PTHREAD_MUTEX_INITIALIZER; static pthread_mutex_t proxy_mutex = PTHREAD_MUTEX_INITIALIZER;
static const char RAND_CHARS[] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"; static const char RAND_CHARS[] =
"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
static void generate_random_string(char *buf, size_t len) { static void generate_random_string(char *buf, size_t len) {
for (size_t i = 0; i < len - 1; i++) { for (size_t i = 0; i < len - 1; i++) {
buf[i] = RAND_CHARS[rand() % (sizeof(RAND_CHARS) - 1)]; buf[i] = RAND_CHARS[rand() % (sizeof(RAND_CHARS) - 1)];
} }
buf[len - 1] = '\0'; buf[len - 1] = '\0';
} }
void set_proxy_config(const char *proxy_str, int rand_user, int rand_pass) { void set_proxy_config(const char *proxy_str, int rand_user, int rand_pass) {
if (proxy_str && proxy_str[0]) { if (proxy_str && proxy_str[0]) {
strncpy(proxy_url, proxy_str, sizeof(proxy_url) - 1); strncpy(proxy_url, proxy_str, sizeof(proxy_url) - 1);
proxy_url[sizeof(proxy_url) - 1] = '\0'; proxy_url[sizeof(proxy_url) - 1] = '\0';
} }
randomize_username = rand_user; randomize_username = rand_user;
randomize_password = rand_pass; randomize_password = rand_pass;
} }
static Proxy parse_proxy_line(const char *line) { static Proxy parse_proxy_line(const char *line) {
Proxy proxy = {.type = PROXY_SOCKS5, .port = 0, .username[0] = '\0', .password[0] = '\0', .failures = 0}; Proxy proxy = {.type = PROXY_SOCKS5,
.port = 0,
.username[0] = '\0',
.password[0] = '\0',
.failures = 0};
const char *host_start = NULL; const char *host_start = NULL;
const char *port_start = NULL; const char *port_start = NULL;
size_t len = strlen(line); size_t len = strlen(line);
if (len == 0) return proxy; if (len == 0)
return proxy;
if (strncmp(line, "http://", 7) == 0) { if (strncmp(line, "http://", 7) == 0) {
proxy.type = PROXY_HTTP; proxy.type = PROXY_HTTP;
host_start = line + 7; host_start = line + 7;
} else if (strncmp(line, "socks5://", 9) == 0) { } else if (strncmp(line, "socks5://", 9) == 0) {
proxy.type = PROXY_SOCKS5; proxy.type = PROXY_SOCKS5;
host_start = line + 9; host_start = line + 9;
} else if (strncmp(line, "socks4://", 9) == 0) { } else if (strncmp(line, "socks4://", 9) == 0) {
proxy.type = PROXY_SOCKS4; proxy.type = PROXY_SOCKS4;
host_start = line + 9; host_start = line + 9;
} else { } else {
host_start = line; host_start = line;
} }
const char *at = strchr(host_start, '@'); const char *at = strchr(host_start, '@');
if (at) { if (at) {
char cred_buf[128]; char cred_buf[128];
size_t cred_len = at - host_start; size_t cred_len = at - host_start;
if (cred_len >= sizeof(cred_buf)) cred_len = sizeof(cred_buf) - 1; if (cred_len >= sizeof(cred_buf))
strncpy(cred_buf, host_start, cred_len); cred_len = sizeof(cred_buf) - 1;
cred_buf[cred_len] = '\0'; strncpy(cred_buf, host_start, cred_len);
cred_buf[cred_len] = '\0';
char *colon = strchr(cred_buf, ':');
if (colon) { char *colon = strchr(cred_buf, ':');
size_t user_len = colon - cred_buf; if (colon) {
if (user_len >= sizeof(proxy.username)) user_len = sizeof(proxy.username) - 1; size_t user_len = colon - cred_buf;
strncpy(proxy.username, cred_buf, user_len); if (user_len >= sizeof(proxy.username))
proxy.username[user_len] = '\0'; user_len = sizeof(proxy.username) - 1;
strncpy(proxy.password, colon + 1, sizeof(proxy.password) - 1); strncpy(proxy.username, cred_buf, user_len);
proxy.password[sizeof(proxy.password) - 1] = '\0'; proxy.username[user_len] = '\0';
} strncpy(proxy.password, colon + 1, sizeof(proxy.password) - 1);
host_start = at + 1; proxy.password[sizeof(proxy.password) - 1] = '\0';
}
host_start = at + 1;
} }
port_start = strchr(host_start, ':'); port_start = strchr(host_start, ':');
if (port_start) { if (port_start) {
char host_buf[256]; char host_buf[256];
size_t host_len = port_start - host_start; size_t host_len = port_start - host_start;
if (host_len >= sizeof(host_buf)) host_len = sizeof(host_buf) - 1; if (host_len >= sizeof(host_buf))
strncpy(host_buf, host_start, host_len); host_len = sizeof(host_buf) - 1;
host_buf[host_len] = '\0'; strncpy(host_buf, host_start, host_len);
snprintf(proxy.host, sizeof(proxy.host), "%.*s", (int)host_len, host_buf); host_buf[host_len] = '\0';
proxy.port = atoi(port_start + 1); snprintf(proxy.host, sizeof(proxy.host), "%.*s", (int)host_len, host_buf);
proxy.port = atoi(port_start + 1);
} else { } else {
snprintf(proxy.host, sizeof(proxy.host), "%s", host_start); snprintf(proxy.host, sizeof(proxy.host), "%s", host_start);
} }
return proxy; return proxy;
@@ -90,71 +99,73 @@ static Proxy parse_proxy_line(const char *line) {
int load_proxy_list(const char *filename) { int load_proxy_list(const char *filename) {
if (!filename || filename[0] == '\0') { if (!filename || filename[0] == '\0') {
return 0; return 0;
} }
pthread_mutex_lock(&proxy_mutex); pthread_mutex_lock(&proxy_mutex);
if (proxy_list) { if (proxy_list) {
free(proxy_list); free(proxy_list);
proxy_list = NULL; proxy_list = NULL;
} }
proxy_count = 0; proxy_count = 0;
FILE *file = fopen(filename, "r"); FILE *file = fopen(filename, "r");
if (!file) { if (!file) {
pthread_mutex_unlock(&proxy_mutex); pthread_mutex_unlock(&proxy_mutex);
fprintf(stderr, "[WARN] Could not open proxy list file: %s\n", filename); fprintf(stderr, "[WARN] Could not open proxy list file: %s\n", filename);
return -1; return -1;
} }
int capacity = 16; int capacity = 16;
proxy_list = (Proxy *)malloc(capacity * sizeof(Proxy)); proxy_list = (Proxy *)malloc(capacity * sizeof(Proxy));
if (!proxy_list) { if (!proxy_list) {
fclose(file); fclose(file);
return -1; return -1;
} }
proxy_count = 0; proxy_count = 0;
char line[512]; char line[512];
while (fgets(line, sizeof(line), file)) { while (fgets(line, sizeof(line), file)) {
line[strcspn(line, "\r\n")] = 0; line[strcspn(line, "\r\n")] = 0;
if (line[0] == '\0' || line[0] == '#') { if (line[0] == '\0' || line[0] == '#') {
continue; continue;
}
char *p = line;
while (*p == ' ' || *p == '\t') p++;
char *end = p + strlen(p) - 1;
while (end > p && (*end == ' ' || *end == '\t')) {
*end = '\0';
end--;
}
if (p[0] == '\0') continue;
Proxy proxy = parse_proxy_line(p);
if (proxy.port == 0) {
continue;
}
if (proxy_count >= capacity) {
capacity *= 2;
Proxy *new_list = (Proxy *)realloc(proxy_list, capacity * sizeof(Proxy));
if (!new_list) {
free(proxy_list);
proxy_list = NULL;
proxy_count = 0;
fclose(file);
pthread_mutex_unlock(&proxy_mutex);
return -1;
} }
proxy_list = new_list;
}
proxy_list[proxy_count++] = proxy; char *p = line;
while (*p == ' ' || *p == '\t')
p++;
char *end = p + strlen(p) - 1;
while (end > p && (*end == ' ' || *end == '\t')) {
*end = '\0';
end--;
}
if (p[0] == '\0')
continue;
Proxy proxy = parse_proxy_line(p);
if (proxy.port == 0) {
continue;
}
if (proxy_count >= capacity) {
capacity *= 2;
Proxy *new_list = (Proxy *)realloc(proxy_list, capacity * sizeof(Proxy));
if (!new_list) {
free(proxy_list);
proxy_list = NULL;
proxy_count = 0;
fclose(file);
pthread_mutex_unlock(&proxy_mutex);
return -1;
}
proxy_list = new_list;
}
proxy_list[proxy_count++] = proxy;
} }
fclose(file); fclose(file);
@@ -166,8 +177,8 @@ int load_proxy_list(const char *filename) {
void free_proxy_list(void) { void free_proxy_list(void) {
pthread_mutex_lock(&proxy_mutex); pthread_mutex_lock(&proxy_mutex);
if (proxy_list) { if (proxy_list) {
free(proxy_list); free(proxy_list);
proxy_list = NULL; proxy_list = NULL;
} }
proxy_count = 0; proxy_count = 0;
pthread_mutex_unlock(&proxy_mutex); pthread_mutex_unlock(&proxy_mutex);
@@ -176,8 +187,8 @@ void free_proxy_list(void) {
Proxy *get_random_proxy(void) { Proxy *get_random_proxy(void) {
pthread_mutex_lock(&proxy_mutex); pthread_mutex_lock(&proxy_mutex);
if (proxy_count == 0) { if (proxy_count == 0) {
pthread_mutex_unlock(&proxy_mutex); pthread_mutex_unlock(&proxy_mutex);
return NULL; return NULL;
} }
int start = rand() % proxy_count; int start = rand() % proxy_count;
@@ -185,19 +196,19 @@ Proxy *get_random_proxy(void) {
Proxy *selected = NULL; Proxy *selected = NULL;
while (checked < proxy_count) { while (checked < proxy_count) {
int idx = (start + checked) % proxy_count; int idx = (start + checked) % proxy_count;
if (proxy_list[idx].failures < max_proxy_retries) { if (proxy_list[idx].failures < max_proxy_retries) {
selected = &proxy_list[idx]; selected = &proxy_list[idx];
break; break;
} }
checked++; checked++;
} }
if (!selected) { if (!selected) {
for (int i = 0; i < proxy_count; i++) { for (int i = 0; i < proxy_count; i++) {
proxy_list[i].failures = 0; proxy_list[i].failures = 0;
} }
selected = &proxy_list[rand() % proxy_count]; selected = &proxy_list[rand() % proxy_count];
} }
pthread_mutex_unlock(&proxy_mutex); pthread_mutex_unlock(&proxy_mutex);
@@ -205,7 +216,8 @@ Proxy *get_random_proxy(void) {
} }
void record_proxy_failure(Proxy *proxy) { void record_proxy_failure(Proxy *proxy) {
if (!proxy) return; if (!proxy)
return;
pthread_mutex_lock(&proxy_mutex); pthread_mutex_lock(&proxy_mutex);
proxy->failures++; proxy->failures++;
pthread_mutex_unlock(&proxy_mutex); pthread_mutex_unlock(&proxy_mutex);
@@ -213,45 +225,49 @@ void record_proxy_failure(Proxy *proxy) {
void apply_proxy_settings(CURL *curl) { void apply_proxy_settings(CURL *curl) {
if (proxy_url[0] != '\0') { if (proxy_url[0] != '\0') {
curl_easy_setopt(curl, CURLOPT_PROXY, proxy_url); curl_easy_setopt(curl, CURLOPT_PROXY, proxy_url);
if (strncmp(proxy_url, "socks5://", 9) == 0) { if (strncmp(proxy_url, "socks5://", 9) == 0) {
curl_easy_setopt(curl, CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5); curl_easy_setopt(curl, CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5);
} else if (strncmp(proxy_url, "socks4://", 9) == 0) { } else if (strncmp(proxy_url, "socks4://", 9) == 0) {
curl_easy_setopt(curl, CURLOPT_PROXYTYPE, CURLPROXY_SOCKS4A); curl_easy_setopt(curl, CURLOPT_PROXYTYPE, CURLPROXY_SOCKS4A);
} else {
curl_easy_setopt(curl, CURLOPT_PROXYTYPE, CURLPROXY_HTTP);
}
if (randomize_username || randomize_password) {
char userpwd[256];
char username[32] = {0};
char password[32] = {0};
if (randomize_username) generate_random_string(username, sizeof(username));
if (randomize_password) generate_random_string(password, sizeof(password));
snprintf(userpwd, sizeof(userpwd), "%s:%s", username, password);
curl_easy_setopt(curl, CURLOPT_PROXYUSERPWD, userpwd);
}
} else if (proxy_count > 0) {
Proxy *proxy = get_random_proxy();
if (proxy) {
char proxy_url_buf[512];
snprintf(proxy_url_buf, sizeof(proxy_url_buf), "%s:%d", proxy->host, proxy->port);
curl_easy_setopt(curl, CURLOPT_PROXY, proxy_url_buf);
if (proxy->type == PROXY_HTTP) {
curl_easy_setopt(curl, CURLOPT_PROXYTYPE, CURLPROXY_HTTP);
} else if (proxy->type == PROXY_SOCKS4) {
curl_easy_setopt(curl, CURLOPT_PROXYTYPE, CURLPROXY_SOCKS4A);
} else { } else {
curl_easy_setopt(curl, CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5); curl_easy_setopt(curl, CURLOPT_PROXYTYPE, CURLPROXY_HTTP);
} }
if (proxy->username[0] != '\0' || proxy->password[0] != '\0') { if (randomize_username || randomize_password) {
char userpwd[128]; char userpwd[256];
snprintf(userpwd, sizeof(userpwd), "%s:%s", proxy->username, proxy->password); char username[32] = {0};
curl_easy_setopt(curl, CURLOPT_PROXYUSERPWD, userpwd); char password[32] = {0};
if (randomize_username)
generate_random_string(username, sizeof(username));
if (randomize_password)
generate_random_string(password, sizeof(password));
snprintf(userpwd, sizeof(userpwd), "%s:%s", username, password);
curl_easy_setopt(curl, CURLOPT_PROXYUSERPWD, userpwd);
}
} else if (proxy_count > 0) {
Proxy *proxy = get_random_proxy();
if (proxy) {
char proxy_url_buf[512];
snprintf(proxy_url_buf, sizeof(proxy_url_buf), "%s:%d", proxy->host,
proxy->port);
curl_easy_setopt(curl, CURLOPT_PROXY, proxy_url_buf);
if (proxy->type == PROXY_HTTP) {
curl_easy_setopt(curl, CURLOPT_PROXYTYPE, CURLPROXY_HTTP);
} else if (proxy->type == PROXY_SOCKS4) {
curl_easy_setopt(curl, CURLOPT_PROXYTYPE, CURLPROXY_SOCKS4A);
} else {
curl_easy_setopt(curl, CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5);
}
if (proxy->username[0] != '\0' || proxy->password[0] != '\0') {
char userpwd[128];
snprintf(userpwd, sizeof(userpwd), "%s:%s", proxy->username,
proxy->password);
curl_easy_setopt(curl, CURLOPT_PROXYUSERPWD, userpwd);
}
} }
}
} }
} }

90
src/Routes/ImageProxy.c
View File

@@ -16,9 +16,9 @@ typedef struct {
static int is_allowed_domain(const char *url) { static int is_allowed_domain(const char *url) {
const char *protocol = strstr(url, "://"); const char *protocol = strstr(url, "://");
if (!protocol) { if (!protocol) {
protocol = url; protocol = url;
} else { } else {
protocol += 3; protocol += 3;
} }
const char *path = strchr(protocol, '/'); const char *path = strchr(protocol, '/');
@@ -26,49 +26,46 @@ static int is_allowed_domain(const char *url) {
char host[256] = {0}; char host[256] = {0};
if (host_len >= sizeof(host)) { if (host_len >= sizeof(host)) {
host_len = sizeof(host) - 1; host_len = sizeof(host) - 1;
} }
strncpy(host, protocol, host_len); strncpy(host, protocol, host_len);
const char *allowed_domains[] = { const char *allowed_domains[] = {"mm.bing.net", "th.bing.com", NULL};
"mm.bing.net",
"th.bing.com",
NULL
};
for (int i = 0; allowed_domains[i] != NULL; i++) { for (int i = 0; allowed_domains[i] != NULL; i++) {
size_t domain_len = strlen(allowed_domains[i]); size_t domain_len = strlen(allowed_domains[i]);
size_t host_str_len = strlen(host); size_t host_str_len = strlen(host);
if (host_str_len >= domain_len) { if (host_str_len >= domain_len) {
const char *suffix = host + host_str_len - domain_len; const char *suffix = host + host_str_len - domain_len;
if (strcmp(suffix, allowed_domains[i]) == 0) { if (strcmp(suffix, allowed_domains[i]) == 0) {
return 1; return 1;
}
} }
} }
}
return 0; return 0;
} }
static size_t write_callback(void *contents, size_t size, size_t nmemb, static size_t write_callback(void *contents, size_t size, size_t nmemb,
void *userp) { void *userp) {
size_t realsize = size * nmemb; size_t realsize = size * nmemb;
MemoryBuffer *buf = (MemoryBuffer *)userp; MemoryBuffer *buf = (MemoryBuffer *)userp;
if (buf->size + realsize > MAX_IMAGE_SIZE) { if (buf->size + realsize > MAX_IMAGE_SIZE) {
return 0; return 0;
} }
if (buf->size + realsize > buf->capacity) { if (buf->size + realsize > buf->capacity) {
size_t new_capacity = buf->capacity * 2; size_t new_capacity = buf->capacity * 2;
if (new_capacity < buf->size + realsize) { if (new_capacity < buf->size + realsize) {
new_capacity = buf->size + realsize; new_capacity = buf->size + realsize;
} }
char *new_data = realloc(buf->data, new_capacity); char *new_data = realloc(buf->data, new_capacity);
if (!new_data) return 0; if (!new_data)
buf->data = new_data; return 0;
buf->capacity = new_capacity; buf->data = new_data;
buf->capacity = new_capacity;
} }
memcpy(buf->data + buf->size, contents, realsize); memcpy(buf->data + buf->size, contents, realsize);
@@ -79,38 +76,34 @@ static size_t write_callback(void *contents, size_t size, size_t nmemb,
int image_proxy_handler(UrlParams *params) { int image_proxy_handler(UrlParams *params) {
const char *url = NULL; const char *url = NULL;
for (int i = 0; i < params->count; i++) { for (int i = 0; i < params->count; i++) {
if (strcmp(params->params[i].key, "url") == 0) { if (strcmp(params->params[i].key, "url") == 0) {
url = params->params[i].value; url = params->params[i].value;
break; break;
} }
} }
if (!url || strlen(url) == 0) { if (!url || strlen(url) == 0) {
send_response("Missing 'url' parameter"); send_response("Missing 'url' parameter");
return 0; return 0;
} }
if (!is_allowed_domain(url)) { if (!is_allowed_domain(url)) {
send_response("Domain not allowed"); send_response("Domain not allowed");
return 0; return 0;
} }
CURL *curl = curl_easy_init(); CURL *curl = curl_easy_init();
if (!curl) { if (!curl) {
send_response("Failed to initialize curl"); send_response("Failed to initialize curl");
return 0; return 0;
} }
MemoryBuffer buf = { MemoryBuffer buf = {.data = malloc(8192), .size = 0, .capacity = 8192};
.data = malloc(8192),
.size = 0,
.capacity = 8192
};
if (!buf.data) { if (!buf.data) {
curl_easy_cleanup(curl); curl_easy_cleanup(curl);
send_response("Memory allocation failed"); send_response("Memory allocation failed");
return 0; return 0;
} }
curl_easy_setopt(curl, CURLOPT_URL, url); curl_easy_setopt(curl, CURLOPT_URL, url);
@@ -130,18 +123,19 @@ int image_proxy_handler(UrlParams *params) {
char content_type[64] = {0}; char content_type[64] = {0};
if (content_type_ptr) { if (content_type_ptr) {
strncpy(content_type, content_type_ptr, sizeof(content_type) - 1); strncpy(content_type, content_type_ptr, sizeof(content_type) - 1);
} }
curl_easy_cleanup(curl); curl_easy_cleanup(curl);
if (res != CURLE_OK || response_code != 200) { if (res != CURLE_OK || response_code != 200) {
free(buf.data); free(buf.data);
send_response("Failed to fetch image"); send_response("Failed to fetch image");
return 0; return 0;
} }
const char *mime_type = strlen(content_type) > 0 ? content_type : "image/jpeg"; const char *mime_type =
strlen(content_type) > 0 ? content_type : "image/jpeg";
serve_data(buf.data, buf.size, mime_type); serve_data(buf.data, buf.size, mime_type);
free(buf.data); free(buf.data);

343
src/Routes/Images.c
View File

@@ -1,7 +1,7 @@
#include "Images.h" #include "Images.h"
#include "../Utility/Unescape.h"
#include "../Proxy/Proxy.h" #include "../Proxy/Proxy.h"
#include "../Scraping/Scraping.h" #include "../Scraping/Scraping.h"
#include "../Utility/Unescape.h"
#include <curl/curl.h> #include <curl/curl.h>
#include <libxml/HTMLparser.h> #include <libxml/HTMLparser.h>
@@ -17,12 +17,12 @@ struct MemoryBlock {
}; };
static size_t ImageWriteCallback(void *data, size_t size, size_t nmemb, static size_t ImageWriteCallback(void *data, size_t size, size_t nmemb,
void *userp) { void *userp) {
size_t realsize = size * nmemb; size_t realsize = size * nmemb;
struct MemoryBlock *mem = (struct MemoryBlock *)userp; struct MemoryBlock *mem = (struct MemoryBlock *)userp;
char *ptr = (char *)realloc(mem->response, mem->size + realsize + 1); char *ptr = (char *)realloc(mem->response, mem->size + realsize + 1);
if (ptr == NULL) { if (ptr == NULL) {
return 0; return 0;
} }
mem->response = ptr; mem->response = ptr;
memcpy(&(mem->response[mem->size]), data, realsize); memcpy(&(mem->response[mem->size]), data, realsize);
@@ -35,30 +35,30 @@ static char *fetch_images_html(const char *url) {
CURL *curl_handle; CURL *curl_handle;
struct MemoryBlock chunk = {.response = malloc(1), .size = 0}; struct MemoryBlock chunk = {.response = malloc(1), .size = 0};
if (!chunk.response) { if (!chunk.response) {
return NULL; return NULL;
} }
curl_handle = curl_easy_init(); curl_handle = curl_easy_init();
if (!curl_handle) { if (!curl_handle) {
free(chunk.response); free(chunk.response);
return NULL; return NULL;
} }
curl_easy_setopt(curl_handle, CURLOPT_URL, url); curl_easy_setopt(curl_handle, CURLOPT_URL, url);
curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, ImageWriteCallback); curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, ImageWriteCallback);
curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, (void *)&chunk); curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, (void *)&chunk);
curl_easy_setopt( curl_easy_setopt(
curl_handle, CURLOPT_USERAGENT, curl_handle, CURLOPT_USERAGENT,
"Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko"); "Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko");
curl_easy_setopt(curl_handle, CURLOPT_FOLLOWLOCATION, 1L); curl_easy_setopt(curl_handle, CURLOPT_FOLLOWLOCATION, 1L);
curl_easy_setopt(curl_handle, CURLOPT_TIMEOUT, 10L); curl_easy_setopt(curl_handle, CURLOPT_TIMEOUT, 10L);
apply_proxy_settings(curl_handle); apply_proxy_settings(curl_handle);
CURLcode res = curl_easy_perform(curl_handle); CURLcode res = curl_easy_perform(curl_handle);
if (res != CURLE_OK) { if (res != CURLE_OK) {
free(chunk.response); free(chunk.response);
curl_easy_cleanup(curl_handle); curl_easy_cleanup(curl_handle);
return NULL; return NULL;
} }
curl_easy_cleanup(curl_handle); curl_easy_cleanup(curl_handle);
@@ -71,15 +71,16 @@ int images_handler(UrlParams *params) {
int page = 1; int page = 1;
if (params) { if (params) {
for (int i = 0; i < params->count; i++) { for (int i = 0; i < params->count; i++) {
if (strcmp(params->params[i].key, "q") == 0) { if (strcmp(params->params[i].key, "q") == 0) {
raw_query = params->params[i].value; raw_query = params->params[i].value;
} else if (strcmp(params->params[i].key, "p") == 0) { } else if (strcmp(params->params[i].key, "p") == 0) {
int parsed = atoi(params->params[i].value); int parsed = atoi(params->params[i].value);
if (parsed > 1) page = parsed; if (parsed > 1)
page = parsed;
}
} }
} }
}
context_set(&ctx, "query", raw_query); context_set(&ctx, "query", raw_query);
@@ -87,7 +88,7 @@ int images_handler(UrlParams *params) {
snprintf(page_str, sizeof(page_str), "%d", page); snprintf(page_str, sizeof(page_str), "%d", page);
snprintf(prev_str, sizeof(prev_str), "%d", page > 1 ? page - 1 : 0); snprintf(prev_str, sizeof(prev_str), "%d", page > 1 ? page - 1 : 0);
snprintf(next_str, sizeof(next_str), "%d", page + 1); snprintf(next_str, sizeof(next_str), "%d", page + 1);
context_set(&ctx, "page", page_str); context_set(&ctx, "page", page_str);
context_set(&ctx, "prev_page", prev_str); context_set(&ctx, "prev_page", prev_str);
context_set(&ctx, "next_page", next_str); context_set(&ctx, "next_page", next_str);
@@ -95,207 +96,239 @@ int images_handler(UrlParams *params) {
context_set(&ctx, "query", display_query); context_set(&ctx, "query", display_query);
if (!raw_query || strlen(raw_query) == 0) { if (!raw_query || strlen(raw_query) == 0) {
send_response("<h1>No query provided</h1>"); send_response("<h1>No query provided</h1>");
if (display_query) free(display_query); if (display_query)
free_context(&ctx); free(display_query);
return -1; free_context(&ctx);
return -1;
} }
CURL *tmp = curl_easy_init(); CURL *tmp = curl_easy_init();
if (!tmp) { if (!tmp) {
send_response("<h1>Error initializing curl</h1>"); send_response("<h1>Error initializing curl</h1>");
if (display_query) free(display_query); if (display_query)
free_context(&ctx); free(display_query);
return -1; free_context(&ctx);
return -1;
} }
char *encoded_query = curl_easy_escape(tmp, raw_query, 0); char *encoded_query = curl_easy_escape(tmp, raw_query, 0);
curl_easy_cleanup(tmp); curl_easy_cleanup(tmp);
if (!encoded_query) { if (!encoded_query) {
send_response("<h1>Error encoding query</h1>"); send_response("<h1>Error encoding query</h1>");
if (display_query) free(display_query); if (display_query)
free_context(&ctx); free(display_query);
return -1; free_context(&ctx);
return -1;
} }
char url[1024]; char url[1024];
int first = (page - 1) * 32 + 1; int first = (page - 1) * 32 + 1;
snprintf(url, sizeof(url), snprintf(url, sizeof(url), "https://www.bing.com/images/search?q=%s&first=%d",
"https://www.bing.com/images/search?q=%s&first=%d", encoded_query, first); encoded_query, first);
char *html = fetch_images_html(url); char *html = fetch_images_html(url);
if (!html) { if (!html) {
send_response("<h1>Error fetching images</h1>"); send_response("<h1>Error fetching images</h1>");
free(encoded_query); free(encoded_query);
free(display_query); free(display_query);
free_context(&ctx); free_context(&ctx);
return -1; return -1;
} }
htmlDocPtr doc = htmlReadMemory(html, (int)strlen(html), NULL, NULL, htmlDocPtr doc = htmlReadMemory(html, (int)strlen(html), NULL, NULL,
HTML_PARSE_RECOVER | HTML_PARSE_NOERROR); HTML_PARSE_RECOVER | HTML_PARSE_NOERROR);
if (!doc) { if (!doc) {
free(html); free(html);
free(encoded_query); free(encoded_query);
free(display_query); free(display_query);
free_context(&ctx); free_context(&ctx);
return -1; return -1;
} }
xmlXPathContextPtr xpathCtx = xmlXPathNewContext(doc); xmlXPathContextPtr xpathCtx = xmlXPathNewContext(doc);
if (!xpathCtx) { if (!xpathCtx) {
xmlFreeDoc(doc); xmlFreeDoc(doc);
free(html); free(html);
free(encoded_query); free(encoded_query);
free(display_query); free(display_query);
free_context(&ctx); free_context(&ctx);
return -1; return -1;
} }
xmlXPathObjectPtr xpathObj = xmlXPathObjectPtr xpathObj =
xmlXPathEvalExpression((const xmlChar *)"//div[@class='item']", xpathCtx); xmlXPathEvalExpression((const xmlChar *)"//div[@class='item']", xpathCtx);
int image_count = 0; int image_count = 0;
char ***image_matrix = NULL; char ***image_matrix = NULL;
int *inner_counts = NULL; int *inner_counts = NULL;
if (xpathObj && xpathObj->nodesetval) { if (xpathObj && xpathObj->nodesetval) {
int nodes = xpathObj->nodesetval->nodeNr; int nodes = xpathObj->nodesetval->nodeNr;
int max_images = (nodes < 32) ? nodes : 32; int max_images = (nodes < 32) ? nodes : 32;
image_matrix = malloc(sizeof(char **) * max_images); image_matrix = malloc(sizeof(char **) * max_images);
inner_counts = malloc(sizeof(int) * max_images); inner_counts = malloc(sizeof(int) * max_images);
for (int i = 0; i < nodes; i++) { for (int i = 0; i < nodes; i++) {
if (image_count >= 32) break; if (image_count >= 32)
break;
xmlNodePtr node = xpathObj->nodesetval->nodeTab[i]; xmlNodePtr node = xpathObj->nodesetval->nodeTab[i];
xmlNodePtr img_node = NULL; xmlNodePtr img_node = NULL;
xmlNodePtr tit_node = NULL; xmlNodePtr tit_node = NULL;
xmlNodePtr des_node = NULL; xmlNodePtr des_node = NULL;
xmlNodePtr thumb_link = NULL; xmlNodePtr thumb_link = NULL;
for (xmlNodePtr child = node->children; child; child = child->next) { for (xmlNodePtr child = node->children; child; child = child->next) {
if (child->type != XML_ELEMENT_NODE) continue; if (child->type != XML_ELEMENT_NODE)
continue;
if (xmlStrcmp(child->name, (const xmlChar *)"a") == 0) { if (xmlStrcmp(child->name, (const xmlChar *)"a") == 0) {
xmlChar *class = xmlGetProp(child, (const xmlChar *)"class"); xmlChar *class = xmlGetProp(child, (const xmlChar *)"class");
if (class) { if (class) {
if (xmlStrstr(class, (const xmlChar *)"thumb") != NULL) { if (xmlStrstr(class, (const xmlChar *)"thumb") != NULL) {
thumb_link = child; thumb_link = child;
for (xmlNodePtr thumb_child = child->children; thumb_child; thumb_child = thumb_child->next) { for (xmlNodePtr thumb_child = child->children; thumb_child;
if (xmlStrcmp(thumb_child->name, (const xmlChar *)"div") == 0) { thumb_child = thumb_child->next) {
xmlChar *div_class = xmlGetProp(thumb_child, (const xmlChar *)"class"); if (xmlStrcmp(thumb_child->name, (const xmlChar *)"div") == 0) {
if (div_class && xmlStrcmp(div_class, (const xmlChar *)"cico") == 0) { xmlChar *div_class =
for (xmlNodePtr cico_child = thumb_child->children; cico_child; cico_child = cico_child->next) { xmlGetProp(thumb_child, (const xmlChar *)"class");
if (xmlStrcmp(cico_child->name, (const xmlChar *)"img") == 0) { if (div_class &&
img_node = cico_child; xmlStrcmp(div_class, (const xmlChar *)"cico") == 0) {
break; for (xmlNodePtr cico_child = thumb_child->children;
cico_child; cico_child = cico_child->next) {
if (xmlStrcmp(cico_child->name, (const xmlChar *)"img") ==
0) {
img_node = cico_child;
break;
}
}
}
if (div_class)
xmlFree(div_class);
}
}
} else if (xmlStrstr(class, (const xmlChar *)"tit") != NULL) {
tit_node = child;
}
xmlFree(class);
}
} else if (xmlStrcmp(child->name, (const xmlChar *)"div") == 0) {
xmlChar *class = xmlGetProp(child, (const xmlChar *)"class");
if (class && xmlStrcmp(class, (const xmlChar *)"meta") == 0) {
for (xmlNodePtr meta_child = child->children; meta_child;
meta_child = meta_child->next) {
if (xmlStrcmp(meta_child->name, (const xmlChar *)"div") == 0) {
xmlChar *div_class =
xmlGetProp(meta_child, (const xmlChar *)"class");
if (div_class) {
if (xmlStrcmp(div_class, (const xmlChar *)"des") == 0) {
des_node = meta_child;
}
xmlFree(div_class);
}
} else if (xmlStrcmp(meta_child->name, (const xmlChar *)"a") ==
0) {
xmlChar *a_class =
xmlGetProp(meta_child, (const xmlChar *)"class");
if (a_class &&
xmlStrstr(a_class, (const xmlChar *)"tit") != NULL) {
tit_node = meta_child;
}
if (a_class)
xmlFree(a_class);
}
} }
} }
if (class)
xmlFree(class);
}
}
xmlChar *iurl =
img_node ? xmlGetProp(img_node, (const xmlChar *)"src") : NULL;
xmlChar *full_url =
thumb_link ? xmlGetProp(thumb_link, (const xmlChar *)"href") : NULL;
xmlChar *title = des_node
? xmlNodeGetContent(des_node)
: (tit_node ? xmlNodeGetContent(tit_node) : NULL);
xmlChar *rurl =
tit_node ? xmlGetProp(tit_node, (const xmlChar *)"href") : NULL;
if (iurl && strlen((char *)iurl) > 0) {
char *proxy_url = NULL;
CURL *esc_curl = curl_easy_init();
if (esc_curl) {
char *encoded = curl_easy_escape(esc_curl, (char *)iurl, 0);
if (encoded) {
size_t proxy_len = strlen("/proxy?url=") + strlen(encoded) + 1;
proxy_url = malloc(proxy_len);
if (proxy_url) {
snprintf(proxy_url, proxy_len, "/proxy?url=%s", encoded);
}
curl_free(encoded);
} }
if (div_class) xmlFree(div_class); curl_easy_cleanup(esc_curl);
} }
}
} else if (xmlStrstr(class, (const xmlChar *)"tit") != NULL) {
tit_node = child;
}
xmlFree(class);
}
} else if (xmlStrcmp(child->name, (const xmlChar *)"div") == 0) {
xmlChar *class = xmlGetProp(child, (const xmlChar *)"class");
if (class && xmlStrcmp(class, (const xmlChar *)"meta") == 0) {
for (xmlNodePtr meta_child = child->children; meta_child; meta_child = meta_child->next) {
if (xmlStrcmp(meta_child->name, (const xmlChar *)"div") == 0) {
xmlChar *div_class = xmlGetProp(meta_child, (const xmlChar *)"class");
if (div_class) {
if (xmlStrcmp(div_class, (const xmlChar *)"des") == 0) {
des_node = meta_child;
}
xmlFree(div_class);
}
} else if (xmlStrcmp(meta_child->name, (const xmlChar *)"a") == 0) {
xmlChar *a_class = xmlGetProp(meta_child, (const xmlChar *)"class");
if (a_class && xmlStrstr(a_class, (const xmlChar *)"tit") != NULL) {
tit_node = meta_child;
}
if (a_class) xmlFree(a_class);
}
}
}
if (class) xmlFree(class);
}
}
xmlChar *iurl = img_node ? xmlGetProp(img_node, (const xmlChar *)"src") : NULL; image_matrix[image_count] = malloc(sizeof(char *) * 4);
xmlChar *full_url = thumb_link ? xmlGetProp(thumb_link, (const xmlChar *)"href") : NULL; image_matrix[image_count][0] =
xmlChar *title = des_node ? xmlNodeGetContent(des_node) : (tit_node ? xmlNodeGetContent(tit_node) : NULL); proxy_url ? strdup(proxy_url) : strdup((char *)iurl);
xmlChar *rurl = tit_node ? xmlGetProp(tit_node, (const xmlChar *)"href") : NULL; image_matrix[image_count][1] = strdup(title ? (char *)title : "Image");
image_matrix[image_count][2] = strdup(rurl ? (char *)rurl : "#");
if (iurl && strlen((char *)iurl) > 0) { image_matrix[image_count][3] =
char *proxy_url = NULL; strdup(full_url ? (char *)full_url : "#");
CURL *esc_curl = curl_easy_init(); inner_counts[image_count] = 4;
if (esc_curl) { image_count++;
char *encoded = curl_easy_escape(esc_curl, (char *)iurl, 0);
if (encoded) {
size_t proxy_len = strlen("/proxy?url=") + strlen(encoded) + 1;
proxy_url = malloc(proxy_len);
if (proxy_url) {
snprintf(proxy_url, proxy_len, "/proxy?url=%s", encoded);
} }
curl_free(encoded);
}
curl_easy_cleanup(esc_curl);
}
image_matrix[image_count] = malloc(sizeof(char *) * 4); if (iurl)
image_matrix[image_count][0] = proxy_url ? strdup(proxy_url) : strdup((char *)iurl); xmlFree(iurl);
image_matrix[image_count][1] = strdup(title ? (char *)title : "Image"); if (title)
image_matrix[image_count][2] = strdup(rurl ? (char *)rurl : "#"); xmlFree(title);
image_matrix[image_count][3] = strdup(full_url ? (char *)full_url : "#"); if (rurl)
inner_counts[image_count] = 4; xmlFree(rurl);
image_count++; if (full_url)
xmlFree(full_url);
} }
if (iurl) xmlFree(iurl);
if (title) xmlFree(title);
if (rurl) xmlFree(rurl);
if (full_url) xmlFree(full_url);
}
} }
context_set_array_of_arrays(&ctx, "images", image_matrix, image_count, context_set_array_of_arrays(&ctx, "images", image_matrix, image_count,
inner_counts); inner_counts);
char *rendered = render_template("images.html", &ctx); char *rendered = render_template("images.html", &ctx);
if (rendered) { if (rendered) {
send_response(rendered); send_response(rendered);
free(rendered); free(rendered);
} else { } else {
send_response("<h1>Error rendering image results</h1>"); send_response("<h1>Error rendering image results</h1>");
} }
if (image_matrix) { if (image_matrix) {
for (int i = 0; i < image_count; i++) { for (int i = 0; i < image_count; i++) {
for (int j = 0; j < 4; j++) { for (int j = 0; j < 4; j++) {
free(image_matrix[i][j]); free(image_matrix[i][j]);
}
free(image_matrix[i]);
} }
free(image_matrix[i]); free(image_matrix);
}
free(image_matrix);
} }
if (inner_counts) { if (inner_counts) {
free(inner_counts); free(inner_counts);
} }
if (xpathObj) xmlXPathFreeObject(xpathObj); if (xpathObj)
if (xpathCtx) xmlXPathFreeContext(xpathCtx); xmlXPathFreeObject(xpathObj);
if (doc) xmlFreeDoc(doc); if (xpathCtx)
xmlXPathFreeContext(xpathCtx);
if (doc)
xmlFreeDoc(doc);
free(html); free(html);
curl_free(encoded_query); curl_free(encoded_query);
free(display_query); free(display_query);
free_context(&ctx); free_context(&ctx);
return 0; return 0;
} }

367
src/Routes/Search.c
View File

@@ -1,8 +1,8 @@
#include "Search.h" #include "Search.h"
#include "../Infobox/Wikipedia.h"
#include "../Infobox/Calculator.h" #include "../Infobox/Calculator.h"
#include "../Infobox/Dictionary.h" #include "../Infobox/Dictionary.h"
#include "../Infobox/UnitConversion.h" #include "../Infobox/UnitConversion.h"
#include "../Infobox/Wikipedia.h"
#include "../Scraping/Scraping.h" #include "../Scraping/Scraping.h"
#include "../Utility/Display.h" #include "../Utility/Display.h"
#include "../Utility/Unescape.h" #include "../Utility/Unescape.h"
@@ -23,62 +23,66 @@ static void *wiki_thread_func(void *arg) {
InfoBoxThreadData *data = (InfoBoxThreadData *)arg; InfoBoxThreadData *data = (InfoBoxThreadData *)arg;
char *dynamic_url = construct_wiki_url(data->query); char *dynamic_url = construct_wiki_url(data->query);
if (dynamic_url) { if (dynamic_url) {
data->result = fetch_wiki_data(dynamic_url); data->result = fetch_wiki_data(dynamic_url);
data->success = data->success =
(data->result.title != NULL && data->result.extract != NULL && (data->result.title != NULL && data->result.extract != NULL &&
strlen(data->result.extract) > 10); strlen(data->result.extract) > 10);
free(dynamic_url); free(dynamic_url);
} else { } else {
data->success = 0; data->success = 0;
} }
return NULL; return NULL;
} }
static int is_calculator_query(const char *query) { static int is_calculator_query(const char *query) {
if (!query) return 0; if (!query)
return 0;
int has_digit = 0; int has_digit = 0;
int has_math_operator = 0; int has_math_operator = 0;
for (const char *p = query; *p; p++) { for (const char *p = query; *p; p++) {
if (isdigit(*p) || *p == '.') { if (isdigit(*p) || *p == '.') {
has_digit = 1; has_digit = 1;
} }
if (*p == '+' || *p == '-' || *p == '*' || *p == '/' || *p == '^') { if (*p == '+' || *p == '-' || *p == '*' || *p == '/' || *p == '^') {
has_math_operator = 1; has_math_operator = 1;
} }
} }
if (!has_digit || !has_math_operator) return 0; if (!has_digit || !has_math_operator)
return 0;
int len = strlen(query); int len = strlen(query);
for (int i = 0; i < len; i++) { for (int i = 0; i < len; i++) {
char c = query[i]; char c = query[i];
if (c == '+' || c == '-' || c == '*' || c == '/' || c == '^') { if (c == '+' || c == '-' || c == '*' || c == '/' || c == '^') {
int has_num_before = 0; int has_num_before = 0;
int has_num_after = 0; int has_num_after = 0;
for (int j = i - 1; j >= 0; j--) { for (int j = i - 1; j >= 0; j--) {
if (isdigit(query[j]) || query[j] == '.') { if (isdigit(query[j]) || query[j] == '.') {
has_num_before = 1; has_num_before = 1;
break; break;
} }
if (query[j] != ' ') break; if (query[j] != ' ')
} break;
}
for (int j = i + 1; j < len; j++) { for (int j = i + 1; j < len; j++) {
if (isdigit(query[j]) || query[j] == '.') { if (isdigit(query[j]) || query[j] == '.') {
has_num_after = 1; has_num_after = 1;
break; break;
} }
if (query[j] != ' ') break; if (query[j] != ' ')
} break;
}
if (has_num_before || has_num_after) { if (has_num_before || has_num_after) {
return 1; return 1;
}
} }
} }
}
return 0; return 0;
} }
@@ -87,11 +91,11 @@ static void *calc_thread_func(void *arg) {
InfoBoxThreadData *data = (InfoBoxThreadData *)arg; InfoBoxThreadData *data = (InfoBoxThreadData *)arg;
if (is_calculator_query(data->query)) { if (is_calculator_query(data->query)) {
data->result = fetch_calc_data((char *)data->query); data->result = fetch_calc_data((char *)data->query);
data->success = data->success =
(data->result.title != NULL && data->result.extract != NULL); (data->result.title != NULL && data->result.extract != NULL);
} else { } else {
data->success = 0; data->success = 0;
} }
return NULL; return NULL;
@@ -101,11 +105,11 @@ static void *dict_thread_func(void *arg) {
InfoBoxThreadData *data = (InfoBoxThreadData *)arg; InfoBoxThreadData *data = (InfoBoxThreadData *)arg;
if (is_dictionary_query(data->query)) { if (is_dictionary_query(data->query)) {
data->result = fetch_dictionary_data(data->query); data->result = fetch_dictionary_data(data->query);
data->success = data->success =
(data->result.title != NULL && data->result.extract != NULL); (data->result.title != NULL && data->result.extract != NULL);
} else { } else {
data->success = 0; data->success = 0;
} }
return NULL; return NULL;
@@ -115,27 +119,30 @@ static void *unit_thread_func(void *arg) {
InfoBoxThreadData *data = (InfoBoxThreadData *)arg; InfoBoxThreadData *data = (InfoBoxThreadData *)arg;
if (is_unit_conv_query(data->query)) { if (is_unit_conv_query(data->query)) {
data->result = fetch_unit_conv_data(data->query); data->result = fetch_unit_conv_data(data->query);
data->success = data->success =
(data->result.title != NULL && data->result.extract != NULL); (data->result.title != NULL && data->result.extract != NULL);
} else { } else {
data->success = 0; data->success = 0;
} }
return NULL; return NULL;
} }
static int add_infobox_to_collection(InfoBox *infobox, char ****collection, static int add_infobox_to_collection(InfoBox *infobox, char ****collection,
int **inner_counts, int current_count) { int **inner_counts, int current_count) {
*collection = *collection =
(char ***)realloc(*collection, sizeof(char **) * (current_count + 1)); (char ***)realloc(*collection, sizeof(char **) * (current_count + 1));
*inner_counts = *inner_counts =
(int *)realloc(*inner_counts, sizeof(int) * (current_count + 1)); (int *)realloc(*inner_counts, sizeof(int) * (current_count + 1));
(*collection)[current_count] = (char **)malloc(sizeof(char *) * 4); (*collection)[current_count] = (char **)malloc(sizeof(char *) * 4);
(*collection)[current_count][0] = infobox->title ? strdup(infobox->title) : NULL; (*collection)[current_count][0] =
(*collection)[current_count][1] = infobox->thumbnail_url ? strdup(infobox->thumbnail_url) : NULL; infobox->title ? strdup(infobox->title) : NULL;
(*collection)[current_count][2] = infobox->extract ? strdup(infobox->extract) : NULL; (*collection)[current_count][1] =
infobox->thumbnail_url ? strdup(infobox->thumbnail_url) : NULL;
(*collection)[current_count][2] =
infobox->extract ? strdup(infobox->extract) : NULL;
(*collection)[current_count][3] = infobox->url ? strdup(infobox->url) : NULL; (*collection)[current_count][3] = infobox->url ? strdup(infobox->url) : NULL;
(*inner_counts)[current_count] = 4; (*inner_counts)[current_count] = 4;
@@ -148,15 +155,16 @@ int results_handler(UrlParams *params) {
int page = 1; int page = 1;
if (params) { if (params) {
for (int i = 0; i < params->count; i++) { for (int i = 0; i < params->count; i++) {
if (strcmp(params->params[i].key, "q") == 0) { if (strcmp(params->params[i].key, "q") == 0) {
raw_query = params->params[i].value; raw_query = params->params[i].value;
} else if (strcmp(params->params[i].key, "p") == 0) { } else if (strcmp(params->params[i].key, "p") == 0) {
int parsed = atoi(params->params[i].value); int parsed = atoi(params->params[i].value);
if (parsed > 1) page = parsed; if (parsed > 1)
page = parsed;
}
} }
} }
}
context_set(&ctx, "query", raw_query); context_set(&ctx, "query", raw_query);
@@ -164,14 +172,14 @@ int results_handler(UrlParams *params) {
snprintf(page_str, sizeof(page_str), "%d", page); snprintf(page_str, sizeof(page_str), "%d", page);
snprintf(prev_str, sizeof(prev_str), "%d", page > 1 ? page - 1 : 0); snprintf(prev_str, sizeof(prev_str), "%d", page > 1 ? page - 1 : 0);
snprintf(next_str, sizeof(next_str), "%d", page + 1); snprintf(next_str, sizeof(next_str), "%d", page + 1);
context_set(&ctx, "page", page_str); context_set(&ctx, "page", page_str);
context_set(&ctx, "prev_page", prev_str); context_set(&ctx, "prev_page", prev_str);
context_set(&ctx, "next_page", next_str); context_set(&ctx, "next_page", next_str);
if (!raw_query || strlen(raw_query) == 0) { if (!raw_query || strlen(raw_query) == 0) {
send_response("<h1>No query provided</h1>"); send_response("<h1>No query provided</h1>");
free_context(&ctx); free_context(&ctx);
return -1; return -1;
} }
pthread_t wiki_tid, calc_tid, dict_tid, unit_tid; pthread_t wiki_tid, calc_tid, dict_tid, unit_tid;
@@ -181,36 +189,36 @@ int results_handler(UrlParams *params) {
InfoBoxThreadData unit_data = {.query = raw_query, .success = 0}; InfoBoxThreadData unit_data = {.query = raw_query, .success = 0};
if (page == 1) { if (page == 1) {
pthread_create(&wiki_tid, NULL, wiki_thread_func, &wiki_data); pthread_create(&wiki_tid, NULL, wiki_thread_func, &wiki_data);
pthread_create(&calc_tid, NULL, calc_thread_func, &calc_data); pthread_create(&calc_tid, NULL, calc_thread_func, &calc_data);
pthread_create(&dict_tid, NULL, dict_thread_func, &dict_data); pthread_create(&dict_tid, NULL, dict_thread_func, &dict_data);
pthread_create(&unit_tid, NULL, unit_thread_func, &unit_data); pthread_create(&unit_tid, NULL, unit_thread_func, &unit_data);
} }
ScrapeJob jobs[ENGINE_COUNT]; ScrapeJob jobs[ENGINE_COUNT];
SearchResult *all_results[ENGINE_COUNT]; SearchResult *all_results[ENGINE_COUNT];
for (int i = 0; i < ENGINE_COUNT; i++) { for (int i = 0; i < ENGINE_COUNT; i++) {
all_results[i] = NULL; all_results[i] = NULL;
jobs[i].engine = &ENGINE_REGISTRY[i]; jobs[i].engine = &ENGINE_REGISTRY[i];
jobs[i].query = raw_query; jobs[i].query = raw_query;
jobs[i].out_results = &all_results[i]; jobs[i].out_results = &all_results[i];
jobs[i].max_results = 10; jobs[i].max_results = 10;
jobs[i].results_count = 0; jobs[i].results_count = 0;
jobs[i].page = page; jobs[i].page = page;
jobs[i].handle = NULL; jobs[i].handle = NULL;
jobs[i].response.memory = NULL; jobs[i].response.memory = NULL;
jobs[i].response.size = 0; jobs[i].response.size = 0;
jobs[i].response.capacity = 0; jobs[i].response.capacity = 0;
} }
scrape_engines_parallel(jobs, ENGINE_COUNT); scrape_engines_parallel(jobs, ENGINE_COUNT);
if (page == 1) { if (page == 1) {
pthread_join(wiki_tid, NULL); pthread_join(wiki_tid, NULL);
pthread_join(calc_tid, NULL); pthread_join(calc_tid, NULL);
pthread_join(dict_tid, NULL); pthread_join(dict_tid, NULL);
pthread_join(unit_tid, NULL); pthread_join(unit_tid, NULL);
} }
char ***infobox_matrix = NULL; char ***infobox_matrix = NULL;
@@ -218,120 +226,135 @@ int results_handler(UrlParams *params) {
int infobox_count = 0; int infobox_count = 0;
if (page == 1) { if (page == 1) {
if (dict_data.success) { if (dict_data.success) {
infobox_count = add_infobox_to_collection(&dict_data.result, &infobox_matrix, infobox_count =
&infobox_inner_counts, infobox_count); add_infobox_to_collection(&dict_data.result, &infobox_matrix,
} &infobox_inner_counts, infobox_count);
}
if (calc_data.success) { if (calc_data.success) {
infobox_count = add_infobox_to_collection(&calc_data.result, &infobox_matrix, infobox_count =
&infobox_inner_counts, infobox_count); add_infobox_to_collection(&calc_data.result, &infobox_matrix,
} &infobox_inner_counts, infobox_count);
}
if (unit_data.success) { if (unit_data.success) {
infobox_count = add_infobox_to_collection(&unit_data.result, &infobox_matrix, infobox_count =
&infobox_inner_counts, infobox_count); add_infobox_to_collection(&unit_data.result, &infobox_matrix,
} &infobox_inner_counts, infobox_count);
}
if (wiki_data.success) { if (wiki_data.success) {
infobox_count = add_infobox_to_collection(&wiki_data.result, &infobox_matrix, infobox_count =
&infobox_inner_counts, infobox_count); add_infobox_to_collection(&wiki_data.result, &infobox_matrix,
} &infobox_inner_counts, infobox_count);
}
} }
if (infobox_count > 0) { if (infobox_count > 0) {
context_set_array_of_arrays(&ctx, "infoboxes", infobox_matrix, context_set_array_of_arrays(&ctx, "infoboxes", infobox_matrix,
infobox_count, infobox_inner_counts); infobox_count, infobox_inner_counts);
for (int i = 0; i < infobox_count; i++) { for (int i = 0; i < infobox_count; i++) {
for (int j = 0; j < 4; j++) free(infobox_matrix[i][j]); for (int j = 0; j < 4; j++)
free(infobox_matrix[i]); free(infobox_matrix[i][j]);
} free(infobox_matrix[i]);
free(infobox_matrix); }
free(infobox_inner_counts); free(infobox_matrix);
free(infobox_inner_counts);
} }
int total_results = 0; int total_results = 0;
for (int i = 0; i < ENGINE_COUNT; i++) { for (int i = 0; i < ENGINE_COUNT; i++) {
total_results += jobs[i].results_count; total_results += jobs[i].results_count;
} }
if (total_results > 0) { if (total_results > 0) {
char ***results_matrix = (char ***)malloc(sizeof(char **) * total_results); char ***results_matrix = (char ***)malloc(sizeof(char **) * total_results);
int *results_inner_counts = (int *)malloc(sizeof(int) * total_results); int *results_inner_counts = (int *)malloc(sizeof(int) * total_results);
char **seen_urls = (char **)malloc(sizeof(char *) * total_results); char **seen_urls = (char **)malloc(sizeof(char *) * total_results);
int unique_count = 0; int unique_count = 0;
for (int i = 0; i < ENGINE_COUNT; i++) { for (int i = 0; i < ENGINE_COUNT; i++) {
for (int j = 0; j < jobs[i].results_count; j++) { for (int j = 0; j < jobs[i].results_count; j++) {
char *display_url = all_results[i][j].url; char *display_url = all_results[i][j].url;
int is_duplicate = 0; int is_duplicate = 0;
for (int k = 0; k < unique_count; k++) { for (int k = 0; k < unique_count; k++) {
if (strcmp(seen_urls[k], display_url) == 0) { if (strcmp(seen_urls[k], display_url) == 0) {
is_duplicate = 1; is_duplicate = 1;
break; break;
}
}
if (is_duplicate) {
free(all_results[i][j].url);
free(all_results[i][j].title);
free(all_results[i][j].snippet);
continue;
}
seen_urls[unique_count] = strdup(display_url);
results_matrix[unique_count] = (char **)malloc(sizeof(char *) * 4);
char *pretty_url = pretty_display_url(display_url);
results_matrix[unique_count][0] = strdup(display_url);
results_matrix[unique_count][1] = strdup(pretty_url);
results_matrix[unique_count][2] = all_results[i][j].title
? strdup(all_results[i][j].title)
: strdup("Untitled");
results_matrix[unique_count][3] =
all_results[i][j].snippet ? strdup(all_results[i][j].snippet)
: strdup("");
results_inner_counts[unique_count] = 4;
free(pretty_url);
free(all_results[i][j].url);
free(all_results[i][j].title);
free(all_results[i][j].snippet);
unique_count++;
} }
free(all_results[i]);
} }
if (is_duplicate) { context_set_array_of_arrays(&ctx, "results", results_matrix, unique_count,
free(all_results[i][j].url); results_inner_counts);
free(all_results[i][j].title);
free(all_results[i][j].snippet); char *html = render_template("results.html", &ctx);
continue; if (html) {
send_response(html);
free(html);
} }
seen_urls[unique_count] = strdup(display_url); for (int i = 0; i < unique_count; i++) {
results_matrix[unique_count] = (char **)malloc(sizeof(char *) * 4); for (int j = 0; j < 4; j++)
char *pretty_url = pretty_display_url(display_url); free(results_matrix[i][j]);
free(results_matrix[i]);
results_matrix[unique_count][0] = strdup(display_url); free(seen_urls[i]);
results_matrix[unique_count][1] = strdup(pretty_url);
results_matrix[unique_count][2] = all_results[i][j].title ? strdup(all_results[i][j].title) : strdup("Untitled");
results_matrix[unique_count][3] = all_results[i][j].snippet ? strdup(all_results[i][j].snippet) : strdup("");
results_inner_counts[unique_count] = 4;
free(pretty_url);
free(all_results[i][j].url);
free(all_results[i][j].title);
free(all_results[i][j].snippet);
unique_count++;
} }
free(all_results[i]); free(seen_urls);
} free(results_matrix);
free(results_inner_counts);
context_set_array_of_arrays(&ctx, "results", results_matrix, unique_count, results_inner_counts);
char *html = render_template("results.html", &ctx);
if (html) {
send_response(html);
free(html);
}
for (int i = 0; i < unique_count; i++) {
for (int j = 0; j < 4; j++) free(results_matrix[i][j]);
free(results_matrix[i]);
free(seen_urls[i]);
}
free(seen_urls);
free(results_matrix);
free(results_inner_counts);
} else { } else {
char *html = render_template("results.html", &ctx); char *html = render_template("results.html", &ctx);
if (html) { if (html) {
send_response(html); send_response(html);
free(html); free(html);
} }
} }
if (page == 1) { if (page == 1) {
if (wiki_data.success) free_infobox(&wiki_data.result); if (wiki_data.success)
if (calc_data.success) free_infobox(&calc_data.result); free_infobox(&wiki_data.result);
if (dict_data.success) free_infobox(&dict_data.result); if (calc_data.success)
if (unit_data.success) free_infobox(&unit_data.result); free_infobox(&calc_data.result);
if (dict_data.success)
free_infobox(&dict_data.result);
if (unit_data.success)
free_infobox(&unit_data.result);
} }
free_context(&ctx); free_context(&ctx);
return 0; return 0;
} }

599
src/Scraping/Scraping.c
View File

@@ -11,21 +11,22 @@
#include <unistd.h> #include <unistd.h>
static size_t WriteMemoryCallback(void *contents, size_t size, size_t nmemb, static size_t WriteMemoryCallback(void *contents, size_t size, size_t nmemb,
void *userp) { void *userp) {
size_t realsize = size * nmemb; size_t realsize = size * nmemb;
MemoryBuffer *mem = (MemoryBuffer *)userp; MemoryBuffer *mem = (MemoryBuffer *)userp;
if (mem->size + realsize + 1 > mem->capacity) { if (mem->size + realsize + 1 > mem->capacity) {
size_t new_cap = mem->capacity == 0 ? 16384 : mem->capacity * 2; size_t new_cap = mem->capacity == 0 ? 16384 : mem->capacity * 2;
while (new_cap < mem->size + realsize + 1) new_cap *= 2; while (new_cap < mem->size + realsize + 1)
new_cap *= 2;
char *ptr = (char *)realloc(mem->memory, new_cap); char *ptr = (char *)realloc(mem->memory, new_cap);
if (!ptr) { if (!ptr) {
return 0; return 0;
} }
mem->memory = ptr; mem->memory = ptr;
mem->capacity = new_cap; mem->capacity = new_cap;
} }
memcpy(&(mem->memory[mem->size]), contents, realsize); memcpy(&(mem->memory[mem->size]), contents, realsize);
@@ -37,37 +38,39 @@ static size_t WriteMemoryCallback(void *contents, size_t size, size_t nmemb,
static const char *get_random_user_agent() { static const char *get_random_user_agent() {
static const char *agents[] = { static const char *agents[] = {
"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, " "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, "
"like Gecko) Chrome/120.0.0.0 Safari/537.36", "like Gecko) Chrome/120.0.0.0 Safari/537.36",
"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 " "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 "
"(KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36", "(KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36",
"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like " "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like "
"Gecko) " "Gecko) "
"Chrome/120.0.0.0` Safari/537.36", "Chrome/120.0.0.0` Safari/537.36",
"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 " "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 "
"Firefox/121.0", "Firefox/121.0",
"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 " "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 "
"(KHTML, like Gecko) Version/17.2 Safari/605.1.15"}; "(KHTML, like Gecko) Version/17.2 Safari/605.1.15"};
return agents[rand() % 5]; return agents[rand() % 5];
} }
static int parse_ddg_lite(const char *engine_name, xmlDocPtr doc, static int parse_ddg_lite(const char *engine_name, xmlDocPtr doc,
SearchResult **out_results, int max_results) { SearchResult **out_results, int max_results) {
(void)engine_name; (void)engine_name;
int found_count = 0; int found_count = 0;
xmlXPathContextPtr xpathCtx = xmlXPathNewContext(doc); xmlXPathContextPtr xpathCtx = xmlXPathNewContext(doc);
if (!xpathCtx) { if (!xpathCtx) {
return 0; return 0;
} }
const char *link_xpath = "//tr[not(contains(@class, 'result-sponsored'))]//a[@class='result-link']"; const char *link_xpath = "//tr[not(contains(@class, "
"'result-sponsored'))]//a[@class='result-link']";
xmlXPathObjectPtr xpathObj = xmlXPathObjectPtr xpathObj =
xmlXPathEvalExpression((xmlChar *)link_xpath, xpathCtx); xmlXPathEvalExpression((xmlChar *)link_xpath, xpathCtx);
if (!xpathObj || !xpathObj->nodesetval || xpathObj->nodesetval->nodeNr == 0) { if (!xpathObj || !xpathObj->nodesetval || xpathObj->nodesetval->nodeNr == 0) {
if (xpathObj) xmlXPathFreeObject(xpathObj); if (xpathObj)
xmlXPathFreeContext(xpathCtx); xmlXPathFreeObject(xpathObj);
return 0; xmlXPathFreeContext(xpathCtx);
return 0;
} }
int num_links = xpathObj->nodesetval->nodeNr; int num_links = xpathObj->nodesetval->nodeNr;
@@ -75,49 +78,54 @@ static int parse_ddg_lite(const char *engine_name, xmlDocPtr doc,
int actual_alloc = (num_links < max_results) ? num_links : max_results; int actual_alloc = (num_links < max_results) ? num_links : max_results;
*out_results = (SearchResult *)calloc(actual_alloc, sizeof(SearchResult)); *out_results = (SearchResult *)calloc(actual_alloc, sizeof(SearchResult));
if (!*out_results) { if (!*out_results) {
xmlXPathFreeObject(xpathObj); xmlXPathFreeObject(xpathObj);
xmlXPathFreeContext(xpathCtx); xmlXPathFreeContext(xpathCtx);
return 0; return 0;
} }
for (int i = 0; i < num_links && found_count < max_results; i++) { for (int i = 0; i < num_links && found_count < max_results; i++) {
xmlNodePtr linkNode = xpathObj->nodesetval->nodeTab[i]; xmlNodePtr linkNode = xpathObj->nodesetval->nodeTab[i];
char *title = (char *)xmlNodeGetContent(linkNode); char *title = (char *)xmlNodeGetContent(linkNode);
char *url = (char *)xmlGetProp(linkNode, (xmlChar *)"href"); char *url = (char *)xmlGetProp(linkNode, (xmlChar *)"href");
char *snippet_text = NULL; char *snippet_text = NULL;
xmlNodePtr current = linkNode->parent; xmlNodePtr current = linkNode->parent;
while (current && xmlStrcasecmp(current->name, (const xmlChar *)"tr") != 0) while (current && xmlStrcasecmp(current->name, (const xmlChar *)"tr") != 0)
current = current->parent; current = current->parent;
if (current && current->next) { if (current && current->next) {
xmlNodePtr snippetRow = current->next; xmlNodePtr snippetRow = current->next;
while (snippetRow && while (snippetRow &&
xmlStrcasecmp(snippetRow->name, (const xmlChar *)"tr") != 0) xmlStrcasecmp(snippetRow->name, (const xmlChar *)"tr") != 0)
snippetRow = snippetRow->next; snippetRow = snippetRow->next;
if (snippetRow) { if (snippetRow) {
xpathCtx->node = snippetRow; xpathCtx->node = snippetRow;
xmlXPathObjectPtr sObj = xmlXPathEvalExpression( xmlXPathObjectPtr sObj = xmlXPathEvalExpression(
(xmlChar *)".//td[@class='result-snippet']", xpathCtx); (xmlChar *)".//td[@class='result-snippet']", xpathCtx);
if (sObj && sObj->nodesetval && sObj->nodesetval->nodeNr > 0) { if (sObj && sObj->nodesetval && sObj->nodesetval->nodeNr > 0) {
snippet_text = (char *)xmlNodeGetContent(sObj->nodesetval->nodeTab[0]); snippet_text =
(char *)xmlNodeGetContent(sObj->nodesetval->nodeTab[0]);
}
if (sObj)
xmlXPathFreeObject(sObj);
xpathCtx->node = NULL;
}
} }
if (sObj) xmlXPathFreeObject(sObj);
xpathCtx->node = NULL;
} (*out_results)[found_count].url = unescape_search_url(url);
} (*out_results)[found_count].title = strdup(title ? title : "No Title");
(*out_results)[found_count].snippet =
strdup(snippet_text ? snippet_text : "");
(*out_results)[found_count].url = unescape_search_url(url); found_count++;
(*out_results)[found_count].title = strdup(title ? title : "No Title");
(*out_results)[found_count].snippet = strdup(snippet_text ? snippet_text : "");
found_count++; if (title)
xmlFree(title);
if (title) xmlFree(title); if (url)
if (url) xmlFree(url); xmlFree(url);
if (snippet_text) xmlFree(snippet_text); if (snippet_text)
xmlFree(snippet_text);
} }
xmlXPathFreeObject(xpathObj); xmlXPathFreeObject(xpathObj);
@@ -126,22 +134,23 @@ static int parse_ddg_lite(const char *engine_name, xmlDocPtr doc,
} }
static int parse_startpage(const char *engine_name, xmlDocPtr doc, static int parse_startpage(const char *engine_name, xmlDocPtr doc,
SearchResult **out_results, int max_results) { SearchResult **out_results, int max_results) {
(void)engine_name; (void)engine_name;
int found_count = 0; int found_count = 0;
xmlXPathContextPtr xpathCtx = xmlXPathNewContext(doc); xmlXPathContextPtr xpathCtx = xmlXPathNewContext(doc);
if (!xpathCtx) { if (!xpathCtx) {
return 0; return 0;
} }
const char *container_xpath = "//div[contains(@class, 'result')]"; const char *container_xpath = "//div[contains(@class, 'result')]";
xmlXPathObjectPtr xpathObj = xmlXPathObjectPtr xpathObj =
xmlXPathEvalExpression((xmlChar *)container_xpath, xpathCtx); xmlXPathEvalExpression((xmlChar *)container_xpath, xpathCtx);
if (!xpathObj || !xpathObj->nodesetval || xpathObj->nodesetval->nodeNr == 0) { if (!xpathObj || !xpathObj->nodesetval || xpathObj->nodesetval->nodeNr == 0) {
if (xpathObj) xmlXPathFreeObject(xpathObj); if (xpathObj)
xmlXPathFreeContext(xpathCtx); xmlXPathFreeObject(xpathObj);
return 0; xmlXPathFreeContext(xpathCtx);
return 0;
} }
int num_results = xpathObj->nodesetval->nodeNr; int num_results = xpathObj->nodesetval->nodeNr;
@@ -149,55 +158,61 @@ static int parse_startpage(const char *engine_name, xmlDocPtr doc,
int actual_alloc = (num_results < max_results) ? num_results : max_results; int actual_alloc = (num_results < max_results) ? num_results : max_results;
*out_results = (SearchResult *)calloc(actual_alloc, sizeof(SearchResult)); *out_results = (SearchResult *)calloc(actual_alloc, sizeof(SearchResult));
if (!*out_results) { if (!*out_results) {
xmlXPathFreeObject(xpathObj); xmlXPathFreeObject(xpathObj);
xmlXPathFreeContext(xpathCtx); xmlXPathFreeContext(xpathCtx);
return 0; return 0;
} }
for (int i = 0; i < num_results && found_count < max_results; i++) { for (int i = 0; i < num_results && found_count < max_results; i++) {
xmlNodePtr resultNode = xpathObj->nodesetval->nodeTab[i]; xmlNodePtr resultNode = xpathObj->nodesetval->nodeTab[i];
xpathCtx->node = resultNode; xpathCtx->node = resultNode;
xmlXPathObjectPtr linkObj = xmlXPathEvalExpression( xmlXPathObjectPtr linkObj = xmlXPathEvalExpression(
(xmlChar *)".//a[contains(@class, 'result-link')]", xpathCtx); (xmlChar *)".//a[contains(@class, 'result-link')]", xpathCtx);
char *url = char *url =
(linkObj && linkObj->nodesetval && linkObj->nodesetval->nodeNr > 0) (linkObj && linkObj->nodesetval && linkObj->nodesetval->nodeNr > 0)
? (char *)xmlGetProp(linkObj->nodesetval->nodeTab[0], ? (char *)xmlGetProp(linkObj->nodesetval->nodeTab[0],
(xmlChar *)"href") (xmlChar *)"href")
: NULL; : NULL;
xmlXPathObjectPtr titleObj = xmlXPathEvalExpression( xmlXPathObjectPtr titleObj = xmlXPathEvalExpression(
(xmlChar *)".//h2[contains(@class, 'wgl-title')]", xpathCtx); (xmlChar *)".//h2[contains(@class, 'wgl-title')]", xpathCtx);
char *title = char *title =
(titleObj && titleObj->nodesetval && titleObj->nodesetval->nodeNr > 0) (titleObj && titleObj->nodesetval && titleObj->nodesetval->nodeNr > 0)
? (char *)xmlNodeGetContent(titleObj->nodesetval->nodeTab[0]) ? (char *)xmlNodeGetContent(titleObj->nodesetval->nodeTab[0])
: NULL; : NULL;
xmlXPathObjectPtr snippetObj = xmlXPathEvalExpression( xmlXPathObjectPtr snippetObj = xmlXPathEvalExpression(
(xmlChar *)".//p[contains(@class, 'description')]", xpathCtx); (xmlChar *)".//p[contains(@class, 'description')]", xpathCtx);
char *snippet_text = char *snippet_text =
(snippetObj && snippetObj->nodesetval && (snippetObj && snippetObj->nodesetval &&
snippetObj->nodesetval->nodeNr > 0) snippetObj->nodesetval->nodeNr > 0)
? (char *)xmlNodeGetContent(snippetObj->nodesetval->nodeTab[0]) ? (char *)xmlNodeGetContent(snippetObj->nodesetval->nodeTab[0])
: NULL; : NULL;
if (url && title) { if (url && title) {
(*out_results)[found_count].url = strdup(url); (*out_results)[found_count].url = strdup(url);
(*out_results)[found_count].title = strdup(title); (*out_results)[found_count].title = strdup(title);
(*out_results)[found_count].snippet = (*out_results)[found_count].snippet =
strdup(snippet_text ? snippet_text : ""); strdup(snippet_text ? snippet_text : "");
found_count++; found_count++;
}
if (title)
xmlFree(title);
if (url)
xmlFree(url);
if (snippet_text)
xmlFree(snippet_text);
if (linkObj)
xmlXPathFreeObject(linkObj);
if (titleObj)
xmlXPathFreeObject(titleObj);
if (snippetObj)
xmlXPathFreeObject(snippetObj);
} }
if (title) xmlFree(title); xpathCtx->node = NULL;
if (url) xmlFree(url);
if (snippet_text) xmlFree(snippet_text);
if (linkObj) xmlXPathFreeObject(linkObj);
if (titleObj) xmlXPathFreeObject(titleObj);
if (snippetObj) xmlXPathFreeObject(snippetObj);
}
xpathCtx->node = NULL;
xmlXPathFreeObject(xpathObj); xmlXPathFreeObject(xpathObj);
xmlXPathFreeContext(xpathCtx); xmlXPathFreeContext(xpathCtx);
@@ -205,22 +220,23 @@ static int parse_startpage(const char *engine_name, xmlDocPtr doc,
} }
static int parse_yahoo(const char *engine_name, xmlDocPtr doc, static int parse_yahoo(const char *engine_name, xmlDocPtr doc,
SearchResult **out_results, int max_results) { SearchResult **out_results, int max_results) {
(void)engine_name; (void)engine_name;
int found_count = 0; int found_count = 0;
xmlXPathContextPtr xpathCtx = xmlXPathNewContext(doc); xmlXPathContextPtr xpathCtx = xmlXPathNewContext(doc);
if (!xpathCtx) { if (!xpathCtx) {
return 0; return 0;
} }
const char *container_xpath = "//div[contains(@class, 'algo-sr')]"; const char *container_xpath = "//div[contains(@class, 'algo-sr')]";
xmlXPathObjectPtr xpathObj = xmlXPathObjectPtr xpathObj =
xmlXPathEvalExpression((xmlChar *)container_xpath, xpathCtx); xmlXPathEvalExpression((xmlChar *)container_xpath, xpathCtx);
if (!xpathObj || !xpathObj->nodesetval || xpathObj->nodesetval->nodeNr == 0) { if (!xpathObj || !xpathObj->nodesetval || xpathObj->nodesetval->nodeNr == 0) {
if (xpathObj) xmlXPathFreeObject(xpathObj); if (xpathObj)
xmlXPathFreeContext(xpathCtx); xmlXPathFreeObject(xpathObj);
return 0; xmlXPathFreeContext(xpathCtx);
return 0;
} }
int num_results = xpathObj->nodesetval->nodeNr; int num_results = xpathObj->nodesetval->nodeNr;
@@ -228,53 +244,59 @@ static int parse_yahoo(const char *engine_name, xmlDocPtr doc,
int actual_alloc = (num_results < max_results) ? num_results : max_results; int actual_alloc = (num_results < max_results) ? num_results : max_results;
*out_results = (SearchResult *)calloc(actual_alloc, sizeof(SearchResult)); *out_results = (SearchResult *)calloc(actual_alloc, sizeof(SearchResult));
if (!*out_results) { if (!*out_results) {
xmlXPathFreeObject(xpathObj); xmlXPathFreeObject(xpathObj);
xmlXPathFreeContext(xpathCtx); xmlXPathFreeContext(xpathCtx);
return 0; return 0;
} }
for (int i = 0; i < num_results && found_count < max_results; i++) { for (int i = 0; i < num_results && found_count < max_results; i++) {
xmlNodePtr resultNode = xpathObj->nodesetval->nodeTab[i]; xmlNodePtr resultNode = xpathObj->nodesetval->nodeTab[i];
xpathCtx->node = resultNode; xpathCtx->node = resultNode;
xmlXPathObjectPtr linkObj = xmlXPathEvalExpression( xmlXPathObjectPtr linkObj = xmlXPathEvalExpression(
(xmlChar *)".//div[contains(@class, 'compTitle')]//a[@target='_blank']", (xmlChar *)".//div[contains(@class, 'compTitle')]//a[@target='_blank']",
xpathCtx); xpathCtx);
char *url = char *url =
(linkObj && linkObj->nodesetval && linkObj->nodesetval->nodeNr > 0) (linkObj && linkObj->nodesetval && linkObj->nodesetval->nodeNr > 0)
? (char *)xmlGetProp(linkObj->nodesetval->nodeTab[0], ? (char *)xmlGetProp(linkObj->nodesetval->nodeTab[0],
(xmlChar *)"href") (xmlChar *)"href")
: NULL; : NULL;
xmlXPathObjectPtr titleObj = xmlXPathEvalExpression( xmlXPathObjectPtr titleObj = xmlXPathEvalExpression(
(xmlChar *)".//h3[contains(@class, 'title')]", xpathCtx); (xmlChar *)".//h3[contains(@class, 'title')]", xpathCtx);
char *title = char *title =
(titleObj && titleObj->nodesetval && titleObj->nodesetval->nodeNr > 0) (titleObj && titleObj->nodesetval && titleObj->nodesetval->nodeNr > 0)
? (char *)xmlNodeGetContent(titleObj->nodesetval->nodeTab[0]) ? (char *)xmlNodeGetContent(titleObj->nodesetval->nodeTab[0])
: NULL; : NULL;
xmlXPathObjectPtr snippetObj = xmlXPathEvalExpression( xmlXPathObjectPtr snippetObj = xmlXPathEvalExpression(
(xmlChar *)".//div[contains(@class, 'compText')]//p", xpathCtx); (xmlChar *)".//div[contains(@class, 'compText')]//p", xpathCtx);
char *snippet_text = char *snippet_text =
(snippetObj && snippetObj->nodesetval && (snippetObj && snippetObj->nodesetval &&
snippetObj->nodesetval->nodeNr > 0) snippetObj->nodesetval->nodeNr > 0)
? (char *)xmlNodeGetContent(snippetObj->nodesetval->nodeTab[0]) ? (char *)xmlNodeGetContent(snippetObj->nodesetval->nodeTab[0])
: NULL; : NULL;
if (url && title) { if (url && title) {
(*out_results)[found_count].url = unescape_search_url(url); (*out_results)[found_count].url = unescape_search_url(url);
(*out_results)[found_count].title = strdup(title); (*out_results)[found_count].title = strdup(title);
(*out_results)[found_count].snippet = (*out_results)[found_count].snippet =
strdup(snippet_text ? snippet_text : ""); strdup(snippet_text ? snippet_text : "");
found_count++; found_count++;
} }
if (title) xmlFree(title); if (title)
if (url) xmlFree(url); xmlFree(title);
if (snippet_text) xmlFree(snippet_text); if (url)
if (linkObj) xmlXPathFreeObject(linkObj); xmlFree(url);
if (titleObj) xmlXPathFreeObject(titleObj); if (snippet_text)
if (snippetObj) xmlXPathFreeObject(snippetObj); xmlFree(snippet_text);
if (linkObj)
xmlXPathFreeObject(linkObj);
if (titleObj)
xmlXPathFreeObject(titleObj);
if (snippetObj)
xmlXPathFreeObject(snippetObj);
} }
xpathCtx->node = NULL; xpathCtx->node = NULL;
@@ -284,36 +306,36 @@ static int parse_yahoo(const char *engine_name, xmlDocPtr doc,
} }
const SearchEngine ENGINE_REGISTRY[] = { const SearchEngine ENGINE_REGISTRY[] = {
{.name = "DuckDuckGo Lite", {.name = "DuckDuckGo Lite",
.base_url = "https://lite.duckduckgo.com/lite/?q=", .base_url = "https://lite.duckduckgo.com/lite/?q=",
.host_header = "lite.duckduckgo.com", .host_header = "lite.duckduckgo.com",
.referer = "https://lite.duckduckgo.com/", .referer = "https://lite.duckduckgo.com/",
.page_param = "s", .page_param = "s",
.page_multiplier = 30, .page_multiplier = 30,
.page_base = 0, .page_base = 0,
.parser = parse_ddg_lite}, .parser = parse_ddg_lite},
{.name = "Startpage", {.name = "Startpage",
.base_url = "https://www.startpage.com/sp/search?q=", .base_url = "https://www.startpage.com/sp/search?q=",
.host_header = "www.startpage.com", .host_header = "www.startpage.com",
.referer = "https://www.startpage.com/", .referer = "https://www.startpage.com/",
.page_param = "page", .page_param = "page",
.page_multiplier = 1, .page_multiplier = 1,
.page_base = 1, .page_base = 1,
.parser = parse_startpage}, .parser = parse_startpage},
{.name = "Yahoo", {.name = "Yahoo",
.base_url = "https://search.yahoo.com/search?p=", .base_url = "https://search.yahoo.com/search?p=",
.host_header = "search.yahoo.com", .host_header = "search.yahoo.com",
.referer = "https://search.yahoo.com/", .referer = "https://search.yahoo.com/",
.page_param = "b", .page_param = "b",
.page_multiplier = 10, .page_multiplier = 10,
.page_base = 1, .page_base = 1,
.parser = parse_yahoo}}; .parser = parse_yahoo}};
const int ENGINE_COUNT = sizeof(ENGINE_REGISTRY) / sizeof(SearchEngine); const int ENGINE_COUNT = sizeof(ENGINE_REGISTRY) / sizeof(SearchEngine);
static void configure_curl_handle(CURL *curl, const char *full_url, static void configure_curl_handle(CURL *curl, const char *full_url,
MemoryBuffer *chunk, MemoryBuffer *chunk,
struct curl_slist *headers) { struct curl_slist *headers) {
curl_easy_setopt(curl, CURLOPT_URL, full_url); curl_easy_setopt(curl, CURLOPT_URL, full_url);
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers); curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback); curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
@@ -340,152 +362,153 @@ int scrape_engines_parallel(ScrapeJob *jobs, int num_jobs) {
retry: retry:
CURLM *multi_handle = curl_multi_init(); CURLM *multi_handle = curl_multi_init();
if (!multi_handle) { if (!multi_handle) {
return -1; return -1;
} }
for (int i = 0; i < num_jobs; i++) { for (int i = 0; i < num_jobs; i++) {
ScrapeJob *job = &jobs[i]; ScrapeJob *job = &jobs[i];
if (job->handle) { if (job->handle) {
curl_easy_cleanup(job->handle); curl_easy_cleanup(job->handle);
job->handle = NULL; job->handle = NULL;
} }
if (job->response.memory) { if (job->response.memory) {
free(job->response.memory); free(job->response.memory);
}
job->handle = curl_easy_init();
if (!job->handle) {
continue;
}
job->response.memory = (char *)malloc(16384);
job->response.size = 0;
job->response.capacity = 16384;
char full_url[1024];
char *encoded_query = curl_easy_escape(job->handle, job->query, 0);
if (!encoded_query) {
curl_easy_cleanup(job->handle);
job->handle = NULL;
continue;
}
int page = (job->page < 1) ? 1 : job->page;
int page_value =
(page - 1) * job->engine->page_multiplier + job->engine->page_base;
snprintf(full_url, sizeof(full_url), "%s%s&%s=%d", job->engine->base_url,
encoded_query, job->engine->page_param, page_value);
curl_free(encoded_query);
struct curl_slist *headers = NULL;
char host_buf[256], ref_buf[256];
snprintf(host_buf, sizeof(host_buf), "Host: %s", job->engine->host_header);
snprintf(ref_buf, sizeof(ref_buf), "Referer: %s", job->engine->referer);
headers = curl_slist_append(headers, host_buf);
headers = curl_slist_append(headers, ref_buf);
headers = curl_slist_append(
headers,
"Accept: "
"text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");
headers = curl_slist_append(headers, "Accept-Language: en-US,en;q=0.5");
headers = curl_slist_append(headers, "DNT: 1");
configure_curl_handle(job->handle, full_url, &job->response, headers);
curl_easy_setopt(job->handle, CURLOPT_PRIVATE, headers);
curl_multi_add_handle(multi_handle, job->handle);
} }
job->handle = curl_easy_init(); usleep(100000 + (rand() % 100000));
if (!job->handle) {
continue;
}
job->response.memory = (char *)malloc(16384);
job->response.size = 0;
job->response.capacity = 16384;
char full_url[1024];
char *encoded_query = curl_easy_escape(job->handle, job->query, 0);
if (!encoded_query) {
curl_easy_cleanup(job->handle);
job->handle = NULL;
continue;
}
int page = (job->page < 1) ? 1 : job->page;
int page_value = (page - 1) * job->engine->page_multiplier + job->engine->page_base;
snprintf(full_url, sizeof(full_url), "%s%s&%s=%d",
job->engine->base_url,
encoded_query,
job->engine->page_param,
page_value);
curl_free(encoded_query);
struct curl_slist *headers = NULL;
char host_buf[256], ref_buf[256];
snprintf(host_buf, sizeof(host_buf), "Host: %s", job->engine->host_header);
snprintf(ref_buf, sizeof(ref_buf), "Referer: %s", job->engine->referer);
headers = curl_slist_append(headers, host_buf);
headers = curl_slist_append(headers, ref_buf);
headers = curl_slist_append(headers, "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");
headers = curl_slist_append(headers, "Accept-Language: en-US,en;q=0.5");
headers = curl_slist_append(headers, "DNT: 1");
configure_curl_handle(job->handle, full_url, &job->response, headers);
curl_easy_setopt(job->handle, CURLOPT_PRIVATE, headers);
curl_multi_add_handle(multi_handle, job->handle);
}
usleep(100000 + (rand() % 100000));
int still_running = 0; int still_running = 0;
curl_multi_perform(multi_handle, &still_running); curl_multi_perform(multi_handle, &still_running);
do { do {
int numfds = 0; int numfds = 0;
CURLMcode mc = curl_multi_wait(multi_handle, NULL, 0, 1000, &numfds); CURLMcode mc = curl_multi_wait(multi_handle, NULL, 0, 1000, &numfds);
if (mc != CURLM_OK) { if (mc != CURLM_OK) {
break; break;
} }
curl_multi_perform(multi_handle, &still_running); curl_multi_perform(multi_handle, &still_running);
} while (still_running); } while (still_running);
CURLMsg *msg; CURLMsg *msg;
int msgs_left; int msgs_left;
while ((msg = curl_multi_info_read(multi_handle, &msgs_left))) { while ((msg = curl_multi_info_read(multi_handle, &msgs_left))) {
if (msg->msg == CURLMSG_DONE) { if (msg->msg == CURLMSG_DONE) {
CURL *handle = msg->easy_handle; CURL *handle = msg->easy_handle;
for (int i = 0; i < num_jobs; i++) { for (int i = 0; i < num_jobs; i++) {
if (jobs[i].handle && jobs[i].handle == handle) { if (jobs[i].handle && jobs[i].handle == handle) {
ScrapeJob *job = &jobs[i]; ScrapeJob *job = &jobs[i];
long response_code; long response_code;
curl_easy_getinfo(handle, CURLINFO_RESPONSE_CODE, &response_code); curl_easy_getinfo(handle, CURLINFO_RESPONSE_CODE, &response_code);
if (msg->data.result == CURLE_OK && job->response.size > 0) { if (msg->data.result == CURLE_OK && job->response.size > 0) {
xmlDocPtr doc = htmlReadMemory( xmlDocPtr doc = htmlReadMemory(
job->response.memory, job->response.size, NULL, NULL, job->response.memory, job->response.size, NULL, NULL,
HTML_PARSE_RECOVER | HTML_PARSE_NOERROR | HTML_PARSE_NOWARNING); HTML_PARSE_RECOVER | HTML_PARSE_NOERROR | HTML_PARSE_NOWARNING);
if (doc) { if (doc) {
job->results_count = job->engine->parser( job->results_count = job->engine->parser(
job->engine->name, doc, job->out_results, job->max_results); job->engine->name, doc, job->out_results, job->max_results);
xmlFreeDoc(doc); xmlFreeDoc(doc);
}
} else {
job->results_count = 0;
}
struct curl_slist *headers;
curl_easy_getinfo(handle, CURLINFO_PRIVATE, &headers);
if (headers)
curl_slist_free_all(headers);
free(job->response.memory);
job->response.memory = NULL;
curl_multi_remove_handle(multi_handle, handle);
if (handle)
curl_easy_cleanup(handle);
job->handle = NULL;
break;
}
} }
} else {
job->results_count = 0;
}
struct curl_slist *headers;
curl_easy_getinfo(handle, CURLINFO_PRIVATE, &headers);
if (headers) curl_slist_free_all(headers);
free(job->response.memory);
job->response.memory = NULL;
curl_multi_remove_handle(multi_handle, handle);
if (handle) curl_easy_cleanup(handle);
job->handle = NULL;
break;
} }
}
}
} }
curl_multi_cleanup(multi_handle); curl_multi_cleanup(multi_handle);
if (retries < max_proxy_retries && proxy_count > 0) { if (retries < max_proxy_retries && proxy_count > 0) {
int any_failed = 0; int any_failed = 0;
for (int i = 0; i < num_jobs; i++) { for (int i = 0; i < num_jobs; i++) {
if (jobs[i].results_count == 0 && jobs[i].response.size == 0) { if (jobs[i].results_count == 0 && jobs[i].response.size == 0) {
any_failed = 1; any_failed = 1;
break; break;
}
}
if (any_failed) {
retries++;
goto retry;
} }
}
if (any_failed) {
retries++;
goto retry;
}
} }
return 0; return 0;
} }
int scrape_engine(const SearchEngine *engine, const char *query, int scrape_engine(const SearchEngine *engine, const char *query,
SearchResult **out_results, int max_results) { SearchResult **out_results, int max_results) {
ScrapeJob job = { ScrapeJob job = {.engine = engine,
.engine = engine, .query = (char *)query,
.query = (char *)query, .out_results = out_results,
.out_results = out_results, .max_results = max_results,
.max_results = max_results, .results_count = 0,
.results_count = 0, .page = 1};
.page = 1
};
scrape_engines_parallel(&job, 1); scrape_engines_parallel(&job, 1);
return job.results_count; return job.results_count;
} }

12
src/Scraping/Scraping.h
View File

@@ -1,8 +1,8 @@
#ifndef SCRAPING_H #ifndef SCRAPING_H
#define SCRAPING_H #define SCRAPING_H
#include <libxml/HTMLparser.h>
#include <curl/curl.h> #include <curl/curl.h>
#include <libxml/HTMLparser.h>
typedef struct { typedef struct {
char *url; char *url;
@@ -11,7 +11,7 @@ typedef struct {
} SearchResult; } SearchResult;
typedef int (*ParserFunc)(const char *engine_name, xmlDocPtr doc, typedef int (*ParserFunc)(const char *engine_name, xmlDocPtr doc,
SearchResult **out_results, int max_results); SearchResult **out_results, int max_results);
typedef struct { typedef struct {
const char *name; const char *name;
@@ -20,8 +20,8 @@ typedef struct {
const char *referer; const char *referer;
const char *page_param; const char *page_param;
int page_multiplier; int page_multiplier;
int page_base; int page_base;
ParserFunc parser; ParserFunc parser;
} SearchEngine; } SearchEngine;
@@ -36,7 +36,7 @@ typedef struct {
char *query; char *query;
SearchResult **out_results; SearchResult **out_results;
int max_results; int max_results;
int page; int page;
CURL *handle; CURL *handle;
MemoryBuffer response; MemoryBuffer response;
int results_count; int results_count;
@@ -46,7 +46,7 @@ extern const SearchEngine ENGINE_REGISTRY[];
extern const int ENGINE_COUNT; extern const int ENGINE_COUNT;
int scrape_engine(const SearchEngine *engine, const char *query, int scrape_engine(const SearchEngine *engine, const char *query,
SearchResult **out_results, int max_results); SearchResult **out_results, int max_results);
int scrape_engines_parallel(ScrapeJob *jobs, int num_jobs); int scrape_engines_parallel(ScrapeJob *jobs, int num_jobs);

6
src/Utility/Display.c
View File

@@ -5,7 +5,8 @@
#include <strings.h> #include <strings.h>
char *pretty_display_url(const char *input) { char *pretty_display_url(const char *input) {
if (!input) return NULL; if (!input)
return NULL;
const char *start = input; const char *start = input;
@@ -28,7 +29,8 @@ char *pretty_display_url(const char *input) {
} }
char *output = (char *)malloc(strlen(temp) * 3 + 1); char *output = (char *)malloc(strlen(temp) * 3 + 1);
if (!output) return NULL; if (!output)
return NULL;
size_t j = 0; size_t j = 0;
for (size_t i = 0; temp[i] != '\0'; i++) { for (size_t i = 0; temp[i] != '\0'; i++) {

15
src/Utility/Unescape.c
View File

@@ -4,7 +4,8 @@
#include <string.h> #include <string.h>
char *unescape_search_url(const char *input) { char *unescape_search_url(const char *input) {
if (!input) return NULL; if (!input)
return NULL;
const char *key = NULL; const char *key = NULL;
const char *start = NULL; const char *start = NULL;
@@ -14,7 +15,8 @@ char *unescape_search_url(const char *input) {
if (strstr(input, "uddg=")) { if (strstr(input, "uddg=")) {
key = "uddg="; key = "uddg=";
start = strstr(input, key); start = strstr(input, key);
if (!start) return NULL; if (!start)
return NULL;
start += strlen(key); start += strlen(key);
end = strchr(start, '&'); end = strchr(start, '&');
len = end ? (size_t)(end - start) : strlen(start); len = end ? (size_t)(end - start) : strlen(start);
@@ -23,7 +25,8 @@ char *unescape_search_url(const char *input) {
else if (strstr(input, "RU=")) { else if (strstr(input, "RU=")) {
key = "RU="; key = "RU=";
start = strstr(input, key); start = strstr(input, key);
if (!start) return strdup(input); if (!start)
return strdup(input);
start += strlen(key); start += strlen(key);
end = strchr(start, '/'); end = strchr(start, '/');
len = end ? (size_t)(end - start) : strlen(start); len = end ? (size_t)(end - start) : strlen(start);
@@ -34,7 +37,8 @@ char *unescape_search_url(const char *input) {
} }
char *output = (char *)malloc(len * 3 + 1); char *output = (char *)malloc(len * 3 + 1);
if (!output) return NULL; if (!output)
return NULL;
size_t i = 0, j = 0; size_t i = 0, j = 0;
while (i < len) { while (i < len) {
@@ -60,7 +64,8 @@ char *unescape_search_url(const char *input) {
} }
char *url_decode_query(const char *src) { char *url_decode_query(const char *src) {
if (!src) return NULL; if (!src)
return NULL;
char *res = strdup(src); char *res = strdup(src);
char *p = res; char *p = res;
while (*src) { while (*src) {

1
src/Utility/Unescape.h
View File

@@ -7,4 +7,3 @@ char *unescape_search_url(const char *input);
char *url_decode_query(const char *src); char *url_decode_query(const char *src);
#endif #endif

9
src/Utility/Utility.c
View File

@@ -1,8 +1,11 @@
#include "Utility.h" #include "Utility.h"
int hex_to_int(char c) { int hex_to_int(char c) {
if (c >= '0' && c <= '9') return c - '0'; if (c >= '0' && c <= '9')
if (c >= 'a' && c <= 'f') return c - 'a' + 10; return c - '0';
if (c >= 'A' && c <= 'F') return c - 'A' + 10; if (c >= 'a' && c <= 'f')
return c - 'a' + 10;
if (c >= 'A' && c <= 'F')
return c - 'A' + 10;
return -1; return -1;
} }

4
static/opensearch.xml
View File

@@ -1,6 +1,6 @@
<?xml version="1.0" encoding="UTF-8"?> <?xml version="1.0" encoding="UTF-8"?>
<OpenSearchDescription <OpenSearchDescription
xmlns="http://a9.com/-/spec/opensearch/1.1/" xmlns="http://a9.com/-/spec/opensearch/1.1/"
xmlns:moz="http://www.mozilla.org/2006/browser/search/"> xmlns:moz="http://www.mozilla.org/2006/browser/search/">
<ShortName>OmniSearch</ShortName> <ShortName>OmniSearch</ShortName>
<Description>Lightweight metasearch engine</Description> <Description>Lightweight metasearch engine</Description>
@@ -8,4 +8,4 @@
<InputEncoding>UTF-8</InputEncoding> <InputEncoding>UTF-8</InputEncoding>
<OutputEncoding>UTF-8</OutputEncoding> <OutputEncoding>UTF-8</OutputEncoding>
<moz:SearchForm>https://search.bwaaa.monster/</moz:SearchForm> <moz:SearchForm>https://search.bwaaa.monster/</moz:SearchForm>
</OpenSearchDescription> </OpenSearchDescription>