Annotation of parser3/src/classes/curl.C, revision 1.31
1.1 misha 1: /** @file
2: Parser: @b curl parser class.
3:
1.13 moko 4: Copyright (c) 2001-2012 Art. Lebedev Studio (http://www.artlebedev.com)
1.1 misha 5: */
6:
1.3 misha 7: #include "pa_config_includes.h"
8:
1.1 misha 9: #include "pa_vmethod_frame.h"
10: #include "pa_request.h"
11: #include "pa_vfile.h"
12: #include "pa_charsets.h"
1.4 misha 13: #include "pa_vstring.h"
14: #include "pa_vtable.h"
15: #include "pa_common.h"
1.11 moko 16: #include "pa_http.h"
1.5 misha 17: #include "ltdl.h"
1.1 misha 18:
1.31 ! moko 19: volatile const char * IDENT_CURL_C="$Id: curl.C,v 1.30 2014/06/27 22:25:11 moko Exp $";
1.13 moko 20:
1.1 misha 21: class MCurl: public Methoded {
22: public:
23: MCurl();
24: };
25:
26: // global variables
27:
28: DECLARE_CLASS_VAR(curl, new MCurl, 0);
29:
30: #include "curl.h"
31:
32: typedef CURL *(*t_curl_easy_init)(); t_curl_easy_init f_curl_easy_init;
33: typedef CURLcode (*t_curl_easy_setopt)(CURL *, CURLoption option, ...); t_curl_easy_setopt f_curl_easy_setopt;
34: typedef CURLcode (*t_curl_easy_perform)(CURL *); t_curl_easy_perform f_curl_easy_perform;
35: typedef void (*t_curl_easy_cleanup)(CURL *); t_curl_easy_cleanup f_curl_easy_cleanup;
36: typedef const char *(*t_curl_easy_strerror)(CURLcode); t_curl_easy_strerror f_curl_easy_strerror;
1.4 misha 37: typedef CURLcode (*t_curl_easy_getinfo)(CURL *curl, CURLINFO info, ...); t_curl_easy_getinfo f_curl_easy_getinfo;
1.1 misha 38: typedef struct curl_slist *(*t_curl_slist_append)(struct curl_slist *,const char *); t_curl_slist_append f_curl_slist_append;
1.4 misha 39: typedef const char *(*t_curl_version)(); t_curl_version f_curl_version;
40: typedef CURLFORMcode (*t_curl_formadd)(struct curl_httppost **httppost, struct curl_httppost **last_post, ...); t_curl_formadd f_curl_formadd;
41: typedef void (*t_curl_formfree)(struct curl_httppost *form); t_curl_formfree f_curl_formfree;
1.1 misha 42:
43: #define GLINK(name) f_##name=(t_##name)lt_dlsym(handle, #name);
44: #define DLINK(name) GLINK(name) if(!f_##name) return "function " #name " was not found";
45:
1.14 moko 46: static const char *dlink(const char *dlopen_file_spec) {
1.28 moko 47: pa_dlinit();
1.1 misha 48:
49: lt_dlhandle handle=lt_dlopen(dlopen_file_spec);
50:
51: if(!handle){
52: if(const char* result=lt_dlerror())
53: return result;
54: return "can not open the dynamic link module";
55: }
56:
57: DLINK(curl_easy_init);
58: DLINK(curl_easy_cleanup);
1.4 misha 59: DLINK(curl_version);
1.1 misha 60: DLINK(curl_easy_setopt);
61: DLINK(curl_easy_perform);
62: DLINK(curl_easy_strerror);
1.4 misha 63: DLINK(curl_easy_getinfo);
1.1 misha 64: DLINK(curl_slist_append);
1.4 misha 65: DLINK(curl_formadd);
66: DLINK(curl_formfree);
1.1 misha 67: return 0;
68: }
69:
70:
71: class ParserOptions {
72: public:
1.12 misha 73: const String *filename;
1.1 misha 74: const String *content_type;
75: bool is_text;
1.4 misha 76: Charset *charset, *response_charset;
77: struct curl_httppost *f_post;
1.19 moko 78: FILE *f_stderr;
1.1 misha 79:
1.19 moko 80: ParserOptions() : filename(0), content_type(0), is_text(true), charset(0), response_charset(0), f_post(0), f_stderr(0){}
1.4 misha 81: ~ParserOptions() {
82: f_curl_formfree(f_post);
1.19 moko 83: if(f_stderr)
84: fclose(f_stderr);
1.4 misha 85: }
86:
1.1 misha 87: };
88:
1.9 moko 89: // using TLS instead of keeping variables in request
90: THREAD_LOCAL CURL *fcurl = 0;
91: THREAD_LOCAL ParserOptions *foptions = 0;
1.1 misha 92:
93: static CURL *curl(){
94: if(!fcurl)
95: throw Exception("curl", 0, "outside of 'session' operator");
96: return fcurl;
97: }
98:
99: static ParserOptions &options(){
100: if(!foptions)
101: throw Exception("curl", 0, "outside of 'session' operator");
102: return *foptions;
103: }
104:
105: // using temporal object scheme to garanty cleanup call
106: class Temp_curl {
1.4 misha 107: CURL *saved_curl;
108: ParserOptions *saved_options;
1.1 misha 109: public:
1.4 misha 110: Temp_curl() : saved_curl(fcurl), saved_options(foptions){
1.5 misha 111: fcurl = f_curl_easy_init();
112: foptions = new ParserOptions();
1.4 misha 113: f_curl_easy_setopt(fcurl, CURLOPT_POSTFIELDSIZE, 0); // fix libcurl bug
1.27 moko 114: f_curl_easy_setopt(fcurl, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4); // avoid ipv6 by default
1.1 misha 115: }
116: ~Temp_curl() {
117: f_curl_easy_cleanup(fcurl);
118: fcurl = saved_curl;
119: delete foptions;
120: foptions = saved_options;
121: }
122: };
123:
124: bool curl_linked = false;
1.29 moko 125: const char *curl_library="libcurl" LT_MODULE_EXT;
1.1 misha 126:
127: const char *curl_status = 0;
128:
129: static void temp_curl(void (*action)(Request&, MethodParams&), Request& r, MethodParams& params){
130: if(!curl_linked){
131: curl_linked=true;
132: curl_status=dlink(curl_library);
133: }
134:
135: if(curl_status == 0){
136: Temp_curl temp_curl;
137: action(r,params);
138: } else {
139: throw Exception("curl", 0, "failed to load curl library %s: %s", curl_library, curl_status);
140: }
141: }
142:
143: static void _curl_session_action(Request& r, MethodParams& params){
144: Value& body_code=params.as_junction(0, "body must be code");
145: r.process_write(body_code);
146: }
147:
148: static void _curl_session(Request& r, MethodParams& params){
149: temp_curl(_curl_session_action, r, params);
150: }
151:
1.5 misha 152: static void _curl_version_action(Request& r, MethodParams& ){
1.4 misha 153: r.write_no_lang(*new VString(*new String(f_curl_version(), String::L_TAINTED)));
154: }
155:
156: static void _curl_version(Request& r, MethodParams& params){
157: fcurl ? _curl_version_action(r, params) : temp_curl(_curl_version_action, r, params);
158: }
1.1 misha 159:
160: static char *str_lower(const char *str){
161: char *result=pa_strdup(str);
162: for(char* c=result; *c; c++)
163: *c=(char)tolower((unsigned char)*c);
164: return result;
165: }
166:
167: static char *str_upper(const char *str){
168: char *result=pa_strdup(str);
169: for(char* c=result; *c; c++)
170: *c=(char)toupper((unsigned char)*c);
171: return result;
172: }
173:
174: class CurlOption {
175: public:
176:
177: enum OptionType {
178: CURL_STRING,
179: CURL_URLENCODE, // url-encoded string
1.4 misha 180: CURL_URL,
1.1 misha 181: CURL_INT,
182: CURL_POST,
1.4 misha 183: CURL_FORM,
1.1 misha 184: CURL_HEADERS,
185: CURL_FILE,
1.15 moko 186: CURL_STDERR,
1.1 misha 187: PARSER_LIBRARY,
188: PARSER_NAME,
189: PARSER_CONTENT_TYPE,
190: PARSER_MODE,
1.4 misha 191: PARSER_CHARSET,
192: PARSER_RESPONSE_CHARSET
1.1 misha 193: };
194:
195: CURLoption id;
196: OptionType type;
197: CurlOption(CURLoption aid, OptionType atype): id(aid), type(atype) {}
198: };
199:
200: class CurlOptionHash: public HashString<CurlOption*> {
201: public:
202: CurlOptionHash() {
203: #define CURL_OPT(type, name) put(str_lower(#name),new CurlOption(CURLOPT_##name, CurlOption::type));
204: #define PARSER_OPT(type, name) put(name,new CurlOption((CURLoption)0, CurlOption::type));
1.4 misha 205: CURL_OPT(CURL_URL, URL);
1.1 misha 206: CURL_OPT(CURL_STRING, INTERFACE);
207: CURL_OPT(CURL_INT, LOCALPORT);
208: CURL_OPT(CURL_INT, PORT);
1.4 misha 209:
1.15 moko 210: CURL_OPT(CURL_INT, VERBOSE);
211: CURL_OPT(CURL_STDERR, STDERR);
212: CURL_OPT(CURL_INT, MAXFILESIZE);
213:
1.1 misha 214: CURL_OPT(CURL_INT, HTTPAUTH);
215: CURL_OPT(CURL_STRING, USERPWD);
216:
217: CURL_OPT(CURL_STRING, USERNAME);
218: CURL_OPT(CURL_STRING, PASSWORD);
219:
1.4 misha 220: CURL_OPT(CURL_URLENCODE, USERAGENT);
221: CURL_OPT(CURL_URLENCODE, REFERER);
1.1 misha 222: CURL_OPT(CURL_INT, AUTOREFERER);
1.25 misha 223:
1.1 misha 224: CURL_OPT(CURL_STRING, ENCODING); // gzip or deflate
1.25 misha 225: CURL_OPT(CURL_STRING, ACCEPT_ENCODING); // gzip or deflate
226:
1.1 misha 227: CURL_OPT(CURL_INT, FOLLOWLOCATION);
228: CURL_OPT(CURL_INT, UNRESTRICTED_AUTH);
1.27 moko 229: CURL_OPT(CURL_INT, IPRESOLVE);
1.1 misha 230:
231: CURL_OPT(CURL_INT, POST);
232: CURL_OPT(CURL_INT, HTTPGET);
1.4 misha 233: CURL_OPT(CURL_INT, NOBODY);
234: CURL_OPT(CURL_STRING, CUSTOMREQUEST);
1.1 misha 235:
236: CURL_OPT(CURL_POST, POSTFIELDS); // hopefully is safe too
237: CURL_OPT(CURL_POST, COPYPOSTFIELDS);
1.4 misha 238: CURL_OPT(CURL_FORM, HTTPPOST);
1.1 misha 239:
240: CURL_OPT(CURL_HEADERS, HTTPHEADER);
241: CURL_OPT(CURL_URLENCODE, COOKIE);
242: CURL_OPT(CURL_URLENCODE, COOKIELIST);
243: CURL_OPT(CURL_INT, COOKIESESSION);
244:
245: CURL_OPT(CURL_INT, IGNORE_CONTENT_LENGTH);
246: CURL_OPT(CURL_INT, HTTP_CONTENT_DECODING);
247: CURL_OPT(CURL_INT, HTTP_TRANSFER_DECODING);
248:
1.4 misha 249: CURL_OPT(CURL_INT, MAXREDIRS);
250: CURL_OPT(CURL_INT, POSTREDIR);
251:
252: CURL_OPT(CURL_STRING, RANGE);
253:
1.1 misha 254: CURL_OPT(CURL_INT, TIMEOUT);
255: CURL_OPT(CURL_INT, TIMEOUT_MS);
256: CURL_OPT(CURL_INT, LOW_SPEED_LIMIT);
257: CURL_OPT(CURL_INT, LOW_SPEED_TIME);
258: CURL_OPT(CURL_INT, MAXCONNECTS);
259:
1.4 misha 260: CURL_OPT(CURL_STRING, PROXY);
261: CURL_OPT(CURL_INT, PROXYPORT);
262: CURL_OPT(CURL_INT, PROXYTYPE);
263: CURL_OPT(CURL_INT, HTTPPROXYTUNNEL);
264: CURL_OPT(CURL_STRING, PROXYUSERPWD);
265: CURL_OPT(CURL_INT, PROXYAUTH);
266:
1.1 misha 267: CURL_OPT(CURL_INT, FRESH_CONNECT);
268: CURL_OPT(CURL_INT, FORBID_REUSE);
269: CURL_OPT(CURL_INT, CONNECTTIMEOUT);
270: CURL_OPT(CURL_INT, CONNECTTIMEOUT_MS);
1.4 misha 271: CURL_OPT(CURL_INT, FAILONERROR);
1.1 misha 272:
273: CURL_OPT(CURL_FILE, SSLCERT);
274: CURL_OPT(CURL_STRING, SSLCERTTYPE);
275: CURL_OPT(CURL_FILE, SSLKEY);
276: CURL_OPT(CURL_STRING, SSLKEYTYPE);
277: CURL_OPT(CURL_STRING, KEYPASSWD);
278: CURL_OPT(CURL_STRING, SSLENGINE);
279: CURL_OPT(CURL_STRING, SSLENGINE_DEFAULT);
280:
281: CURL_OPT(CURL_FILE, ISSUERCERT);
282: CURL_OPT(CURL_FILE, CRLFILE);
283:
284: CURL_OPT(CURL_STRING, CAINFO);
1.18 moko 285: CURL_OPT(CURL_FILE, CAPATH);
1.1 misha 286: CURL_OPT(CURL_INT, SSL_VERIFYPEER);
287: CURL_OPT(CURL_INT, SSL_VERIFYHOST);
288: CURL_OPT(CURL_STRING, SSL_CIPHER_LIST);
289: CURL_OPT(CURL_INT, SSL_SESSIONID_CACHE);
290:
291: PARSER_OPT(PARSER_LIBRARY, "library");
292: PARSER_OPT(PARSER_NAME, "name");
293: PARSER_OPT(PARSER_CONTENT_TYPE, "content-type");
294: PARSER_OPT(PARSER_MODE, "mode");
295: PARSER_OPT(PARSER_CHARSET, "charset");
1.4 misha 296: PARSER_OPT(PARSER_RESPONSE_CHARSET, "response-charset");
1.1 misha 297: }
298:
299: } *curl_options=0;
300:
301: static const char *curl_urlencode(const String &s, Request& r){
302: if(options().charset){
303: Temp_client_charset temp(r.charsets, *options().charset);
304: return s.untaint_and_transcode_cstr(String::L_URI, &r.charsets);
305: } else
306: return s.untaint_cstr(String::L_URI);
307: }
308:
309: static struct curl_slist *curl_headers(HashStringValue *value_hash, Request& r) {
310: struct curl_slist *slist=NULL;
311:
312: for(HashStringValue::Iterator i(*value_hash); i; i.next() ){
313: String header =
1.10 moko 314: String(pa_http_safe_header_name(capitalize(i.key().cstr())), String::L_AS_IS)
1.1 misha 315: << ": "
1.10 moko 316: << String(i.value()->as_string(), String::L_HTTP_HEADER);
1.1 misha 317:
318: slist=f_curl_slist_append(slist, curl_urlencode(header, r));
319: }
320: return slist;
321: }
322:
1.4 misha 323: static const char* curl_transcode(const String &s, Request& r){
324: return options().charset ? Charset::transcode(s.cstr(), r.charsets.source(), *options().charset).cstr() : s.cstr();
325: }
326:
327: static void curl_form(HashStringValue *value_hash, Request& r){
328: struct curl_httppost *f_last=0;
329: for(HashStringValue::Iterator i(*value_hash); i; i.next() ){
330: const char *key = curl_transcode(String(i.key().cstr()), r);
331: if(const String* svalue = i.value()->get_string()){
332: // string
333: f_curl_formadd(&options().f_post, &f_last,
334: CURLFORM_PTRNAME, key,
335: CURLFORM_PTRCONTENTS, curl_transcode(String(svalue->cstr()), r),
336: CURLFORM_END);
337: } else if(Table* tvalue = i.value()->get_table()){
338: // table
339: for(size_t t = 0; t < tvalue->count(); t++) {
340: f_curl_formadd(&options().f_post, &f_last,
341: CURLFORM_PTRNAME, key,
342: CURLFORM_PTRCONTENTS, curl_transcode(String(tvalue->get(t)->get(0)->cstr()), r),
343: CURLFORM_END);
344: }
345: } else if(VFile* fvalue=static_cast<VFile *>(i.value()->as("file"))){
346: // file
347: f_curl_formadd(&options().f_post, &f_last,
348: CURLFORM_PTRNAME, key,
349: CURLFORM_BUFFER, curl_transcode(String(fvalue->fields().get("name")->as_string(), String::L_FILE_SPEC), r),
350: CURLFORM_BUFFERLENGTH, (long)fvalue->value_size(),
351: CURLFORM_BUFFERPTR, fvalue->value_ptr(),
352: CURLFORM_CONTENTTYPE, fvalue->fields().get("content-type")->as_string().taint_cstr(String::L_URI),
353: CURLFORM_END);
354: } else {
355: throw Exception("curl", new String(i.key(), String::L_TAINTED), "is %s, form option value can be string, table or file only", i.value()->type());
356: }
357: }
358: }
359:
1.18 moko 360: static const char *curl_check_file(const String &file_spec){
361: const char *file_spec_cstr=file_spec.taint_cstr(String::L_FILE_SPEC);
362: struct stat finfo;
363: if(stat(file_spec_cstr, &finfo)==0)
364: check_safe_mode(finfo, file_spec, file_spec_cstr);
365: return file_spec_cstr;
366: }
367:
1.1 misha 368: static void curl_setopt(HashStringValue::key_type key, HashStringValue::value_type value, Request& r) {
369: CurlOption *opt=curl_options->get(key);
370:
371: if(opt==0)
372: throw Exception("curl", 0, "called with invalid option '%s'", key.cstr());
373:
374: CURLcode res = CURLE_OK;
375: Value &v=r.process_to_value(*value);
376:
377: switch (opt->type){
378: case CurlOption::CURL_STRING:{
379: // string curl option
380: const char *value_str=v.as_string().cstr();
381: res=f_curl_easy_setopt(curl(), opt->id, value_str);
382: break;
383: }
384: case CurlOption::CURL_URLENCODE:{
385: // url-encoded string curl option
386: const char *value_str=curl_urlencode(v.as_string(), r);
387: res=f_curl_easy_setopt(curl(), opt->id, value_str);
388: break;
389: }
1.4 misha 390: case CurlOption::CURL_URL:{
391: // url-encoded string curl_url option
1.5 misha 392: const String url = v.as_string();
393: if(!url.starts_with("http://") && !url.starts_with("https://"))
394: throw Exception("curl", 0, "failed to set option '%s': invalid url scheme '%s'", key.cstr(), url.cstr());
1.4 misha 395: const char *value_str=curl_urlencode(url, r);
396: res=f_curl_easy_setopt(curl(), opt->id, value_str);
397: break;
398: }
1.1 misha 399: case CurlOption::CURL_INT:{
1.2 misha 400: // integer curl option
401: long value_int=(long)v.as_double();
1.1 misha 402: res=f_curl_easy_setopt(curl(), opt->id, value_int);
403: break;
404: }
405: case CurlOption::CURL_POST:{
406: // http post curl option
407: if(v.get_string()){
1.2 misha 408: if( (res=f_curl_easy_setopt(curl(), CURLOPT_POSTFIELDSIZE, -1L)) == CURLE_OK )
1.1 misha 409: res=f_curl_easy_setopt(curl(), opt->id, curl_urlencode(v.as_string(), r));
410: } else {
411: VFile *file=v.as_vfile(String::L_AS_IS);
1.2 misha 412: if( (res=f_curl_easy_setopt(curl(), CURLOPT_POSTFIELDSIZE, (long)file->value_size())) == CURLE_OK )
1.1 misha 413: res=f_curl_easy_setopt(curl(), opt->id, file->value_ptr());
414: }
415: break;
416: }
1.4 misha 417: case CurlOption::CURL_FORM:{
418: HashStringValue *value_hash = v.get_hash();
419: if(value_hash){
420: curl_form(value_hash, r);
1.5 misha 421: } else if(v.get_string()->is_empty()){
1.4 misha 422: f_curl_formfree(options().f_post);
423: options().f_post = 0;
424: } else {
1.16 moko 425: throw Exception("curl", 0, "failed to set option '%s': value must be a hash", key.cstr());
1.5 misha 426: }
1.4 misha 427: res=f_curl_easy_setopt(curl(), CURLOPT_HTTPPOST, foptions->f_post);
428: break;
429: }
1.1 misha 430: case CurlOption::CURL_HEADERS:{
431: // http headers curl option
432: HashStringValue *value_hash=v.get_hash();
433: res=f_curl_easy_setopt(curl(), opt->id, value_hash ? curl_headers(value_hash, r) : 0);
434: break;
435: }
436: case CurlOption::CURL_FILE:{
437: // file-spec curl option
1.18 moko 438: const char *file_spec_cstr=curl_check_file(r.absolute(v.as_string()));
439: res=f_curl_easy_setopt(curl(), opt->id, file_spec_cstr);
1.1 misha 440: break;
441: }
1.16 moko 442: case CurlOption::CURL_STDERR:{
443: // verbose output redirection from stderr to file curl option
1.18 moko 444: const char *file_spec_cstr=curl_check_file(r.absolute(v.as_string()));
1.19 moko 445: FILE *f_stderr=options().f_stderr=fopen(file_spec_cstr, "wt");
446: if (f_stderr){
447: res=f_curl_easy_setopt(curl(), opt->id, f_stderr);
1.16 moko 448: } else {
1.18 moko 449: throw Exception("curl", 0, "failed to set option '%s': unable to open file '%s'", key.cstr(), file_spec_cstr);
1.16 moko 450: }
451: break;
452: }
1.1 misha 453: case CurlOption::PARSER_LIBRARY:{
454: // 'library' parser option
455: if(fcurl==0){
456: curl_library=v.as_string().taint_cstr(String::L_FILE_SPEC);
457: } else
1.16 moko 458: throw Exception("curl", 0, "failed to set option '%s': already loaded", key.cstr());
1.1 misha 459: break;
460: }
461: case CurlOption::PARSER_NAME:{
462: // 'name' parser option
1.12 misha 463: options().filename=&v.as_string();
1.1 misha 464: break;
465: }
466: case CurlOption::PARSER_CONTENT_TYPE:{
467: // 'content-type' parser option
468: options().content_type=&v.as_string();
469: break;
470: }
471: case CurlOption::PARSER_MODE:{
472: // 'mode' parser option
1.12 misha 473: options().is_text=VFile::is_text_mode(v.as_string());
1.1 misha 474: break;
475: }
476: case CurlOption::PARSER_CHARSET:{
1.30 moko 477: // 'charset' parser option should be processed before other options
1.1 misha 478: break;
479: }
1.4 misha 480: case CurlOption::PARSER_RESPONSE_CHARSET:{
1.12 misha 481: // 'response-charset' parser option
1.4 misha 482: options().response_charset=&::charsets.get(v.as_string().change_case(r.charsets.source(), String::CC_UPPER));
483: break;
484: }
1.1 misha 485: }
486:
487: if(res != CURLE_OK)
488: throw Exception("curl", 0, "failed to set option '%s': %s", key.cstr(), f_curl_easy_strerror(res));
489: }
490:
1.3 misha 491: static void _curl_options(Request& r, MethodParams& params){
1.1 misha 492: if(curl_options==0)
493: curl_options=new CurlOptionHash();
494:
1.30 moko 495: if(HashStringValue* options_hash=params.as_hash(0)){
496: if(Value* value=options_hash->get("charset")){
497: // charset should be handled first as params may require transcode
498: Value &v=r.process_to_value(*value);
499: options().charset=&::charsets.get(v.as_string().change_case(r.charsets.source(), String::CC_UPPER));
500: }
501: options_hash->for_each<Request&>(curl_setopt, r);
502: }
1.1 misha 503: }
504:
505:
506: class Curl_buffer{
507: public:
508: char *buf;
509: size_t length;
510: size_t buf_size;
511:
512: Curl_buffer() : buf((char *)pa_malloc(MAX_STRING+1)), length(0), buf_size(MAX_STRING){}
513: };
514:
515: static int curl_writer(char *data, size_t size, size_t nmemb, Curl_buffer *result){
516: if(result == 0)
517: return 0;
518:
519: size=size*nmemb;
520: if(size>0){
521: if(result->length + size >= result->buf_size){
522: result->buf_size = result->buf_size*2 + size;
523: result->buf = (char *)pa_realloc(result->buf, result->buf_size+1);
524: }
525: memcpy(result->buf+result->length, data, size);
526: result->length += size;
527: }
528: return size;
529: }
530:
1.24 misha 531: class Curl_response {
532: public:
533: HASH_STRING<char*> headers;
534: Array<char*> cookies;
535: };
536:
537: static int curl_header(char *data, size_t size, size_t nmemb, Curl_response *result){
1.1 misha 538: if(result == 0)
539: return 0;
540:
541: size=size*nmemb;
542: if(size>0){
543: char *line=pa_strdup(data, size);
544: char *value=lsplit(line,':');
545: if(value && *line){
546: // we need only headers, not the response code
1.24 misha 547: const char* HEADER_NAME=str_upper(line);
548: result->headers.put(HEADER_NAME, value);
549: if(strcmp(HEADER_NAME, "SET-COOKIE")==0)
550: result->cookies+=value;
1.1 misha 551: }
552: }
553: return size;
554: }
555:
556: #define CURL_SETOPT(option, arg, message) \
557: if( (res=f_curl_easy_setopt(curl(), option, arg)) != CURLE_OK){ \
558: throw Exception("curl", 0, "failed to set " message ": %s", f_curl_easy_strerror(res)); \
559: }
560:
561: static void _curl_load_action(Request& r, MethodParams& params){
562: if(params.count()==1)
1.3 misha 563: _curl_options(r, params);
1.1 misha 564:
565: CURLcode res;
566:
567: Curl_buffer body;
568: CURL_SETOPT(CURLOPT_WRITEFUNCTION, curl_writer, "curl writer function");
569: CURL_SETOPT(CURLOPT_WRITEDATA, &body, "curl write buffer");
570:
571: // we need a container for headers as VFile fields can be put only after VFile.set
1.24 misha 572: Curl_response response;
1.1 misha 573: CURL_SETOPT(CURLOPT_HEADERFUNCTION, curl_header, "curl header function");
1.24 misha 574: CURL_SETOPT(CURLOPT_WRITEHEADER, &response, "curl header buffer");
1.1 misha 575:
576: if((res=f_curl_easy_perform(curl())) != CURLE_OK){
1.15 moko 577: const char *ex_type = 0;
1.4 misha 578: switch(res){
579: case CURLE_OPERATION_TIMEDOUT:
580: ex_type = "curl.timeout"; break;
581: case CURLE_COULDNT_RESOLVE_HOST:
582: ex_type = "curl.host"; break;
583: case CURLE_COULDNT_CONNECT:
584: ex_type = "curl.connect"; break;
585: case CURLE_HTTP_RETURNED_ERROR:
586: ex_type = "curl.status"; break;
587: case CURLE_SSL_CONNECT_ERROR:
588: case CURLE_SSL_CERTPROBLEM:
589: case CURLE_SSL_CIPHER:
590: case CURLE_SSL_CACERT:
591: case CURLE_SSL_ENGINE_INITFAILED:
592: ex_type = "curl.ssl"; break;
1.31 ! moko 593: default: break;
1.4 misha 594: }
595: throw Exception( ex_type ? ex_type : "curl.fail", 0, "%s", f_curl_easy_strerror(res));
1.1 misha 596: }
597:
598: // assure trailing zero
599: body.buf[body.length]=0;
600:
1.4 misha 601: VFile& result=*new VFile;
602:
1.24 misha 603: String::Body ct_header = response.headers.get(HTTP_CONTENT_TYPE_UPPER);
1.8 moko 604: Charset *asked_charset = options().response_charset;
605: if (asked_charset == 0){
606: Charset *remote_charset = ct_header.is_empty() ? 0 : detect_charset(ct_header.trim(String::TRIM_BOTH, " \t\n\r").cstr());
607: asked_charset = remote_charset ? remote_charset : options().charset;
608: }
1.1 misha 609:
610: if(options().is_text && asked_charset != 0){
611: String::C c=Charset::transcode(String::C(body.buf, body.length), *asked_charset, r.charsets.source());
612: body.buf=(char *)c.str;
613: body.length=c.length;
614: }
615:
1.21 misha 616: result.set(true/*tainted*/, options().is_text, body.buf, body.length, options().filename
1.22 moko 617: , options().content_type ? new VString(*options().content_type) : 0, &r);
1.4 misha 618: long http_status = 0;
619: if(f_curl_easy_getinfo(curl(), CURLINFO_RESPONSE_CODE, &http_status) == CURLE_OK){
620: result.fields().put("status", new VInt(http_status));
621: }
622:
1.24 misha 623: for(HASH_STRING<char *>::Iterator i(response.headers); i; i.next() ){
1.23 misha 624: String::Body HEADER_NAME=i.key();
1.1 misha 625: String::Body value=i.value();
626: if(asked_charset){
1.23 misha 627: HEADER_NAME=Charset::transcode(HEADER_NAME, *asked_charset, r.charsets.source());
1.1 misha 628: value=Charset::transcode(value, *asked_charset, r.charsets.source());
629: }
1.24 misha 630: result.fields().put(HEADER_NAME, new VString(*new String(value.trim(String::TRIM_BOTH, " \t\n\r"), String::L_TAINTED)));
631: }
1.23 misha 632:
1.24 misha 633: // filling $.cookies
634: Table* tcookies=0;
635:
636: for(Array_iterator<char*> i(response.cookies); i.has_next(); ){
637: if(!tcookies){
638: Table::columns_type columns=new ArrayString(1);
639: *columns+=new String("value");
640: tcookies=new Table(columns);
1.23 misha 641: }
1.24 misha 642: String::Body value=i.next();
643: if(asked_charset)
644: value=Charset::transcode(value, *asked_charset, r.charsets.source());
645: ArrayString& row=*new ArrayString(1);
646: row+=new String(value.trim(String::TRIM_BOTH, " \t\n\r"), String::L_TAINTED);
647: *tcookies+=&row;
1.1 misha 648: }
649:
1.24 misha 650: if(tcookies)
651: result.fields().put(HTTP_COOKIES_NAME, new VTable(parse_cookies(r, tcookies)));
1.23 misha 652:
1.1 misha 653: r.write_no_lang(result);
654: }
655:
656: static void _curl_load(Request& r, MethodParams& params){
657: fcurl ? _curl_load_action(r, params) : temp_curl(_curl_load_action, r, params);
658: }
659:
660: // constructor
661: MCurl::MCurl(): Methoded("curl") {
662: add_native_method("session", Method::CT_STATIC, _curl_session, 1, 1);
1.4 misha 663: add_native_method("version", Method::CT_STATIC, _curl_version, 0, 0);
1.3 misha 664: add_native_method("options", Method::CT_STATIC, _curl_options, 1, 1);
1.1 misha 665: add_native_method("load", Method::CT_STATIC, _curl_load, 0, 1);
1.3 misha 666: }
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