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Diffstat (limited to 'src/oauth.h')
| -rw-r--r-- | src/oauth.h | 764 |
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diff --git a/src/oauth.h b/src/oauth.h new file mode 100644 index 0000000..e612554 --- /dev/null +++ b/src/oauth.h @@ -0,0 +1,764 @@ +/** + * @brief OAuth.net implementation in POSIX-C. + * @file oauth.h + * @author Robin Gareus <robin@gareus.org> + * + * Copyright 2007-2011 Robin Gareus <robin@gareus.org> + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + * + */ +#ifndef _OAUTH_H +#define _OAUTH_H 1 + +#ifndef DOXYGEN_IGNORE +// liboauth version +#define LIBOAUTH_VERSION "0.9.7" +#define LIBOAUTH_VERSION_MAJOR 0 +#define LIBOAUTH_VERSION_MINOR 9 +#define LIBOAUTH_VERSION_MICRO 7 + +//interface revision number +//http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html +#define LIBOAUTH_CUR 8 +#define LIBOAUTH_REV 4 +#define LIBOAUTH_AGE 8 +#endif + +#ifdef __GNUC__ +# define OA_GCC_VERSION_AT_LEAST(x,y) (__GNUC__ > x || __GNUC__ == x && __GNUC_MINOR__ >= y) +#else +# define OA_GCC_VERSION_AT_LEAST(x,y) 0 +#endif + +#ifndef attribute_deprecated +#if OA_GCC_VERSION_AT_LEAST(3,1) +# define attribute_deprecated __attribute__((deprecated)) +#else +# define attribute_deprecated +#endif +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +/** \enum OAuthMethod + * signature method to used for signing the request. + */ +typedef enum { + OA_HMAC=0, ///< use HMAC-SHA1 request signing method + OA_RSA, ///< use RSA signature + OA_PLAINTEXT ///< use plain text signature (for testing only) + } OAuthMethod; + +/** + * Base64 encode and return size data in 'src'. The caller must free the + * returned string. + * + * @param size The size of the data in src + * @param src The data to be base64 encode + * @return encoded string otherwise NULL + */ +char *oauth_encode_base64(int size, const unsigned char *src); + +/** + * Decode the base64 encoded string 'src' into the memory pointed to by + * 'dest'. + * + * @param dest Pointer to memory for holding the decoded string. + * Must be large enough to receive the decoded string. + * @param src A base64 encoded string. + * @return the length of the decoded string if decode + * succeeded otherwise 0. + */ +int oauth_decode_base64(unsigned char *dest, const char *src); + +/** + * Escape 'string' according to RFC3986 and + * http://oauth.net/core/1.0/#encoding_parameters. + * + * @param string The data to be encoded + * @return encoded string otherwise NULL + * The caller must free the returned string. + */ +char *oauth_url_escape(const char *string); + +/** + * Parse RFC3986 encoded 'string' back to unescaped version. + * + * @param string The data to be unescaped + * @param olen unless NULL the length of the returned string is stored there. + * @return decoded string or NULL + * The caller must free the returned string. + */ +char *oauth_url_unescape(const char *string, size_t *olen); + + +/** + * returns base64 encoded HMAC-SHA1 signature for + * given message and key. + * both data and key need to be urlencoded. + * + * the returned string needs to be freed by the caller + * + * @param m message to be signed + * @param k key used for signing + * @return signature string. + */ +char *oauth_sign_hmac_sha1 (const char *m, const char *k); + +/** + * same as \ref oauth_sign_hmac_sha1 but allows + * to specify length of message and key (in case they contain null chars). + * + * @param m message to be signed + * @param ml length of message + * @param k key used for signing + * @param kl length of key + * @return signature string. + */ +char *oauth_sign_hmac_sha1_raw (const char *m, const size_t ml, const char *k, const size_t kl); + +/** + * returns plaintext signature for the given key. + * + * the returned string needs to be freed by the caller + * + * @param m message to be signed + * @param k key used for signing + * @return signature string + */ +char *oauth_sign_plaintext (const char *m, const char *k); + +/** + * returns RSA-SHA1 signature for given data. + * the returned signature needs to be freed by the caller. + * + * @param m message to be signed + * @param k private-key PKCS and Base64-encoded + * @return base64 encoded signature string. + */ +char *oauth_sign_rsa_sha1 (const char *m, const char *k); + +/** + * verify RSA-SHA1 signature. + * + * returns the output of EVP_VerifyFinal() for a given message, + * cert/pubkey and signature. + * + * @param m message to be verified + * @param c public-key or x509 certificate + * @param s base64 encoded signature + * @return 1 for a correct signature, 0 for failure and -1 if some other error occurred + */ +int oauth_verify_rsa_sha1 (const char *m, const char *c, const char *s); + +/** + * url-escape strings and concatenate with '&' separator. + * The number of strings to be concatenated must be + * given as first argument. + * all arguments thereafter must be of type (char *) + * + * @param len the number of arguments to follow this parameter + * + * @return pointer to memory holding the concatenated + * strings - needs to be free(d) by the caller. or NULL + * in case we ran out of memory. + */ +char *oauth_catenc(int len, ...); + +/** + * splits the given url into a parameter array. + * (see \ref oauth_serialize_url and \ref oauth_serialize_url_parameters for the reverse) + * (see \ref oauth_split_post_paramters for a more generic version) + * + * @param url the url or query-string to parse; may be NULL + * @param argv pointer to a (char *) array where the results are stored. + * The array is re-allocated to match the number of parameters and each + * parameter-string is allocated with strdup. - The memory needs to be freed + * by the caller. + * + * @return number of parameter(s) in array. + */ +int oauth_split_url_parameters(const char *url, char ***argv); + +/** + * splits the given url into a parameter array. + * (see \ref oauth_serialize_url and \ref oauth_serialize_url_parameters for the reverse) + * + * @param url the url or query-string to parse. + * @param argv pointer to a (char *) array where the results are stored. + * The array is re-allocated to match the number of parameters and each + * parameter-string is allocated with strdup. - The memory needs to be freed + * by the caller. + * @param qesc use query parameter escape (vs post-param-escape) - if set + * to 1 all '+' are treated as spaces ' ' + * + * @return number of parameter(s) in array. + */ +int oauth_split_post_paramters(const char *url, char ***argv, short qesc); + +/** + * build a url query string from an array. + * + * @param argc the total number of elements in the array + * @param start element in the array at which to start concatenating. + * @param argv parameter-array to concatenate. + * @return url string needs to be freed by the caller. + * + */ +char *oauth_serialize_url (int argc, int start, char **argv); + +/** + * encode query parameters from an array. + * + * @param argc the total number of elements in the array + * @param start element in the array at which to start concatenating. + * @param argv parameter-array to concatenate. + * @param sep separator for parameters (usually "&") + * @param mod - bitwise modifiers: + * 1: skip all values that start with "oauth_" + * 2: skip all values that don't start with "oauth_" + * 4: double quotation marks are added around values (use with sep ", " for HTTP Authorization header). + * @return url string needs to be freed by the caller. + */ +char *oauth_serialize_url_sep (int argc, int start, char **argv, char *sep, int mod); + +/** + * build a query parameter string from an array. + * + * This function is a shortcut for \ref oauth_serialize_url (argc, 1, argv). + * It strips the leading host/path, which is usually the first + * element when using oauth_split_url_parameters on an URL. + * + * @param argc the total number of elements in the array + * @param argv parameter-array to concatenate. + * @return url string needs to be freed by the caller. + */ +char *oauth_serialize_url_parameters (int argc, char **argv); + +/** + * generate a random string between 15 and 32 chars length + * and return a pointer to it. The value needs to be freed by the + * caller + * + * @return zero terminated random string. + */ +char *oauth_gen_nonce(); + +/** + * string compare function for oauth parameters. + * + * used with qsort. needed to normalize request parameters. + * see http://oauth.net/core/1.0/#anchor14 + */ +int oauth_cmpstringp(const void *p1, const void *p2); + + +/** + * search array for parameter key. + * @param argv length of array to search + * @param argc parameter array to search + * @param key key of parameter to check. + * + * @return FALSE (0) if array does not contain a parameter with given key, TRUE (1) otherwise. + */ +int oauth_param_exists(char **argv, int argc, char *key); + +/** + * add query parameter to array + * + * @param argcp pointer to array length int + * @param argvp pointer to array values + * @param addparam parameter to add (eg. "foo=bar") + */ +void oauth_add_param_to_array(int *argcp, char ***argvp, const char *addparam); + +/** + * free array args + * + * @param argcp pointer to array length int + * @param argvp pointer to array values to be free()d + */ +void oauth_free_array(int *argcp, char ***argvp); + +/** + * compare two strings in constant-time (as to not let an + * attacker guess how many leading chars are correct: + * http://rdist.root.org/2010/01/07/timing-independent-array-comparison/ ) + * + * @param a string to compare + * @param b string to compare + * @param len_a length of string a + * @param len_b length of string b + * + * returns 0 (false) if strings are not equal, and 1 (true) if strings are equal. + */ +int oauth_time_independent_equals_n(const char* a, const char* b, size_t len_a, size_t len_b); + +/** + * @deprecated Use oauth_time_independent_equals_n() instead. + */ +int oauth_time_indepenent_equals_n(const char* a, const char* b, size_t len_a, size_t len_b) attribute_deprecated; + +/** + * compare two strings in constant-time. + * wrapper to \ref oauth_time_independent_equals_n + * which calls strlen() for each argument. + * + * @param a string to compare + * @param b string to compare + * + * returns 0 (false) if strings are not equal, and 1 (true) if strings are equal. + */ +int oauth_time_independent_equals(const char* a, const char* b); + +/** + * @deprecated Use oauth_time_independent_equals() instead. + */ +int oauth_time_indepenent_equals(const char* a, const char* b) attribute_deprecated; + +/** + * calculate OAuth-signature for a given HTTP request URL, parameters and oauth-tokens. + * + * if 'postargs' is NULL a "GET" request is signed and the + * signed URL is returned. Else this fn will modify 'postargs' + * to point to memory that contains the signed POST-variables + * and returns the base URL. + * + * both, the return value and (if given) 'postargs' need to be freed + * by the caller. + * + * @param url The request URL to be signed. append all GET or POST + * query-parameters separated by either '?' or '&' to this parameter. + * + * @param postargs This parameter points to an area where the return value + * is stored. If 'postargs' is NULL, no value is stored. + * + * @param method specify the signature method to use. It is of type + * \ref OAuthMethod and most likely \ref OA_HMAC. + * + * @param http_method The HTTP request method to use (ie "GET", "PUT",..) + * If NULL is given as 'http_method' this defaults to "GET" when + * 'postargs' is also NULL and when postargs is not NULL "POST" is used. + * + * @param c_key consumer key + * @param c_secret consumer secret + * @param t_key token key + * @param t_secret token secret + * + * @return the signed url or NULL if an error occurred. + * + */ +char *oauth_sign_url2 (const char *url, char **postargs, + OAuthMethod method, + const char *http_method, //< HTTP request method + const char *c_key, //< consumer key - posted plain text + const char *c_secret, //< consumer secret - used as 1st part of secret-key + const char *t_key, //< token key - posted plain text in URL + const char *t_secret //< token secret - used as 2st part of secret-key + ); + +/** + * @deprecated Use oauth_sign_url2() instead. + */ +char *oauth_sign_url (const char *url, char **postargs, + OAuthMethod method, + const char *c_key, //< consumer key - posted plain text + const char *c_secret, //< consumer secret - used as 1st part of secret-key + const char *t_key, //< token key - posted plain text in URL + const char *t_secret //< token secret - used as 2st part of secret-key + ) attribute_deprecated; + + +/** + * the back-end behind by /ref oauth_sign_array2. + * however it does not serialize the signed URL again. + * The user needs to call /ref oauth_serialize_url (oA) + * and /ref oauth_free_array to do so. + * + * This allows to split parts of the URL to be used for + * OAuth HTTP Authorization header: + * see http://oauth.net/core/1.0a/#consumer_req_param + * the oauthtest2 example code does so. + * + * + * @param argcp pointer to array length int + * @param argvp pointer to array values + * (argv[0]="http://example.org:80/" argv[1]="first=QueryParamater" .. + * the array is modified: fi. oauth_ parameters are added) + * These arrays can be generated with /ref oauth_split_url_parameters + * or /ref oauth_split_post_paramters. + * + * @param postargs This parameter points to an area where the return value + * is stored. If 'postargs' is NULL, no value is stored. + * + * @param method specify the signature method to use. It is of type + * \ref OAuthMethod and most likely \ref OA_HMAC. + * + * @param http_method The HTTP request method to use (ie "GET", "PUT",..) + * If NULL is given as 'http_method' this defaults to "GET" when + * 'postargs' is also NULL and when postargs is not NULL "POST" is used. + * + * @param c_key consumer key + * @param c_secret consumer secret + * @param t_key token key + * @param t_secret token secret + * + * @return void + * + */ +void oauth_sign_array2_process (int *argcp, char***argvp, + char **postargs, + OAuthMethod method, + const char *http_method, //< HTTP request method + const char *c_key, //< consumer key - posted plain text + const char *c_secret, //< consumer secret - used as 1st part of secret-key + const char *t_key, //< token key - posted plain text in URL + const char *t_secret //< token secret - used as 2st part of secret-key + ); + +/** + * same as /ref oauth_sign_url + * with the url already split into parameter array + * + * @param argcp pointer to array length int + * @param argvp pointer to array values + * (argv[0]="http://example.org:80/" argv[1]="first=QueryParamater" .. + * the array is modified: fi. oauth_ parameters are added) + * These arrays can be generated with /ref oauth_split_url_parameters + * or /ref oauth_split_post_paramters. + * + * @param postargs This parameter points to an area where the return value + * is stored. If 'postargs' is NULL, no value is stored. + * + * @param method specify the signature method to use. It is of type + * \ref OAuthMethod and most likely \ref OA_HMAC. + * + * @param http_method The HTTP request method to use (ie "GET", "PUT",..) + * If NULL is given as 'http_method' this defaults to "GET" when + * 'postargs' is also NULL and when postargs is not NULL "POST" is used. + * + * @param c_key consumer key + * @param c_secret consumer secret + * @param t_key token key + * @param t_secret token secret + * + * @return the signed url or NULL if an error occurred. + */ +char *oauth_sign_array2 (int *argcp, char***argvp, + char **postargs, + OAuthMethod method, + const char *http_method, //< HTTP request method + const char *c_key, //< consumer key - posted plain text + const char *c_secret, //< consumer secret - used as 1st part of secret-key + const char *t_key, //< token key - posted plain text in URL + const char *t_secret //< token secret - used as 2st part of secret-key + ); + +/** + * @deprecated Use oauth_sign_array2() instead. + */ +char *oauth_sign_array (int *argcp, char***argvp, + char **postargs, + OAuthMethod method, + const char *c_key, //< consumer key - posted plain text + const char *c_secret, //< consumer secret - used as 1st part of secret-key + const char *t_key, //< token key - posted plain text in URL + const char *t_secret //< token secret - used as 2st part of secret-key + ) attribute_deprecated; + + +/** + * calculate body hash (sha1sum) of given file and return + * a oauth_body_hash=xxxx parameter to be added to the request. + * The returned string needs to be freed by the calling function. + * + * see + * http://oauth.googlecode.com/svn/spec/ext/body_hash/1.0/oauth-bodyhash.html + * + * @param filename the filename to calculate the hash for + * + * @return URL oauth_body_hash parameter string + */ +char *oauth_body_hash_file(char *filename); + +/** + * calculate body hash (sha1sum) of given data and return + * a oauth_body_hash=xxxx parameter to be added to the request. + * The returned string needs to be freed by the calling function. + * The returned string is not yet url-escaped and suitable to be + * passed as argument to \ref oauth_catenc. + * + * see + * http://oauth.googlecode.com/svn/spec/ext/body_hash/1.0/oauth-bodyhash.html + * + * @param length length of the data parameter in bytes + * @param data to calculate the hash for + * + * @return URL oauth_body_hash parameter string + */ +char *oauth_body_hash_data(size_t length, const char *data); + +/** + * base64 encode digest, free it and return a URL parameter + * with the oauth_body_hash. The returned hash needs to be freed by the + * calling function. The returned string is not yet url-escaped and + * thus suitable to be passed to \ref oauth_catenc. + * + * @param len length of the digest to encode + * @param digest hash value to encode + * + * @return URL oauth_body_hash parameter string + */ +char *oauth_body_hash_encode(size_t len, unsigned char *digest); + +/** + * xep-0235 - TODO + */ +char *oauth_sign_xmpp (const char *xml, + OAuthMethod method, + const char *c_secret, //< consumer secret - used as 1st part of secret-key + const char *t_secret //< token secret - used as 2st part of secret-key + ); + +/** + * do a HTTP GET request, wait for it to finish + * and return the content of the reply. + * (requires libcurl or a command-line HTTP client) + * + * If compiled <b>without</b> libcurl this function calls + * a command-line executable defined in the environment variable + * OAUTH_HTTP_GET_CMD - it defaults to + * <tt>curl -sA 'liboauth-agent/0.1' '%%u'</tt> + * where %%u is replaced with the URL and query parameters. + * + * bash & wget example: + * <tt>export OAUTH_HTTP_CMD="wget -q -U 'liboauth-agent/0.1' '%u' "</tt> + * + * WARNING: this is a tentative function. it's convenient and handy for testing + * or developing OAuth code. But don't rely on this function + * to become a stable part of this API. It does not do + * much error checking or handling for one thing.. + * + * NOTE: \a u and \a q are just concatenated with a '?' in between, + * unless \a q is NULL. in which case only \a u will be used. + * + * @param u base url to get + * @param q query string to send along with the HTTP request or NULL. + * @return In case of an error NULL is returned; otherwise a pointer to the + * replied content from HTTP server. latter needs to be freed by caller. + */ +char *oauth_http_get (const char *u, const char *q); + +/** + * do a HTTP GET request, wait for it to finish + * and return the content of the reply. + * + * (requires libcurl) + * + * This is equivalent to /ref oauth_http_get but allows to + * specifiy a custom HTTP header and has + * has no support for commandline-curl. + * + * If liboauth is compiled <b>without</b> libcurl this function + * always returns NULL. + * + * @param u base url to get + * @param q query string to send along with the HTTP request or NULL. + * @param customheader specify custom HTTP header (or NULL for none) + * Multiple header elements can be passed separating them with "\r\n" + * @return In case of an error NULL is returned; otherwise a pointer to the + * replied content from HTTP server. latter needs to be freed by caller. + */ +char *oauth_http_get2 (const char *u, const char *q, const char *customheader); + + +/** + * do a HTTP POST request, wait for it to finish + * and return the content of the reply. + * (requires libcurl or a command-line HTTP client) + * + * If compiled <b>without</b> libcurl this function calls + * a command-line executable defined in the environment variable + * OAUTH_HTTP_CMD - it defaults to + * <tt>curl -sA 'liboauth-agent/0.1' -d '%%p' '%%u'</tt> + * where %%p is replaced with the postargs and %%u is replaced with + * the URL. + * + * bash & wget example: + * <tt>export OAUTH_HTTP_CMD="wget -q -U 'liboauth-agent/0.1' --post-data='%p' '%u' "</tt> + * + * NOTE: This function uses the curl's default HTTP-POST Content-Type: + * application/x-www-form-urlencoded which is the only option allowed + * by oauth core 1.0 spec. Experimental code can use the Environment variable + * to transmit custom HTTP headers or parameters. + * + * WARNING: this is a tentative function. it's convenient and handy for testing + * or developing OAuth code. But don't rely on this function + * to become a stable part of this API. It does not do + * much error checking for one thing.. + * + * @param u url to query + * @param p postargs to send along with the HTTP request. + * @return replied content from HTTP server. needs to be freed by caller. + */ +char *oauth_http_post (const char *u, const char *p); + +/** + * do a HTTP POST request, wait for it to finish + * and return the content of the reply. + * (requires libcurl) + * + * It's equivalent to /ref oauth_http_post, but offers + * the possibility to specify a custom HTTP header and + * has no support for commandline-curl. + * + * If liboauth is compiled <b>without</b> libcurl this function + * always returns NULL. + * + * @param u url to query + * @param p postargs to send along with the HTTP request. + * @param customheader specify custom HTTP header (or NULL for none) + * Multiple header elements can be passed separating them with "\r\n" + * @return replied content from HTTP server. needs to be freed by caller. + */ +char *oauth_http_post2 (const char *u, const char *p, const char *customheader); + + +/** + * http post raw data from file. + * the returned string needs to be freed by the caller + * (requires libcurl) + * + * see dislaimer: /ref oauth_http_post + * + * @param u url to retrieve + * @param fn filename of the file to post along + * @param len length of the file in bytes. set to '0' for autodetection + * @param customheader specify custom HTTP header (or NULL for default). + * Multiple header elements can be passed separating them with "\r\n" + * @return returned HTTP reply or NULL on error + */ +char *oauth_post_file (const char *u, const char *fn, const size_t len, const char *customheader); + +/** + * http post raw data + * the returned string needs to be freed by the caller + * (requires libcurl) + * + * see dislaimer: /ref oauth_http_post + * + * @param u url to retrieve + * @param data data to post + * @param len length of the data in bytes. + * @param customheader specify custom HTTP header (or NULL for default) + * Multiple header elements can be passed separating them with "\r\n" + * @return returned HTTP reply or NULL on error + */ +char *oauth_post_data (const char *u, const char *data, size_t len, const char *customheader); + +/** + * http post raw data, with callback. + * the returned string needs to be freed by the caller + * (requires libcurl) + * + * Invokes the callback - in no particular order - when HTTP-request status updates occur. + * The callback is called with: + * void * callback_data: supplied on function call. + * int type: 0=data received, 1=data sent. + * size_t size: amount of data received or amount of data sent so far + * size_t totalsize: original amount of data to send, or amount of data received + * + * @param u url to retrieve + * @param data data to post along + * @param len length of the file in bytes. set to '0' for autodetection + * @param customheader specify custom HTTP header (or NULL for default) + * Multiple header elements can be passed separating them with "\r\n" + * @param callback specify the callback function + * @param callback_data specify data to pass to the callback function + * @return returned HTTP reply or NULL on error + */ +char *oauth_post_data_with_callback (const char *u, + const char *data, + size_t len, + const char *customheader, + void (*callback)(void*,int,size_t,size_t), + void *callback_data); + +/** + * http send raw data. similar to /ref oauth_http_post but provides + * for specifying the HTTP request method. + * + * the returned string needs to be freed by the caller + * (requires libcurl) + * + * see dislaimer: /ref oauth_http_post + * + * @param u url to retrieve + * @param data data to post + * @param len length of the data in bytes. + * @param customheader specify custom HTTP header (or NULL for default) + * Multiple header elements can be passed separating them with "\r\n" + * @param httpMethod specify http verb ("GET"/"POST"/"PUT"/"DELETE") to be used. if httpMethod is NULL, a POST is executed. + * @return returned HTTP reply or NULL on error + */ +char *oauth_send_data (const char *u, + const char *data, + size_t len, + const char *customheader, + const char *httpMethod); + +/** + * http post raw data, with callback. + * the returned string needs to be freed by the caller + * (requires libcurl) + * + * Invokes the callback - in no particular order - when HTTP-request status updates occur. + * The callback is called with: + * void * callback_data: supplied on function call. + * int type: 0=data received, 1=data sent. + * size_t size: amount of data received or amount of data sent so far + * size_t totalsize: original amount of data to send, or amount of data received + * + * @param u url to retrieve + * @param data data to post along + * @param len length of the file in bytes. set to '0' for autodetection + * @param customheader specify custom HTTP header (or NULL for default) + * Multiple header elements can be passed separating them with "\r\n" + * @param callback specify the callback function + * @param callback_data specify data to pass to the callback function + * @param httpMethod specify http verb ("GET"/"POST"/"PUT"/"DELETE") to be used. + * @return returned HTTP reply or NULL on error + */ +char *oauth_send_data_with_callback (const char *u, + const char *data, + size_t len, + const char *customheader, + void (*callback)(void*,int,size_t,size_t), + void *callback_data, + const char *httpMethod); + +#ifdef __cplusplus +} /* extern "C" */ +#endif /* __cplusplus */ + +#endif +/* vi:set ts=8 sts=2 sw=2: */ |