diff options
| -rw-r--r-- | docs/examples/Makefile.inc | 3 | ||||
| -rw-r--r-- | docs/examples/smtp-multi.c | 196 |
2 files changed, 198 insertions, 1 deletions
diff --git a/docs/examples/Makefile.inc b/docs/examples/Makefile.inc index 78d312665..51c96a5a8 100644 --- a/docs/examples/Makefile.inc +++ b/docs/examples/Makefile.inc @@ -3,7 +3,8 @@ check_PROGRAMS = 10-at-a-time anyauthput cookie_interface debug fileupload \ fopen ftpget ftpgetresp ftpupload getinfo getinmemory http-post httpput \ https multi-app multi-debugcallback multi-double multi-post multi-single \ persistant post-callback postit2 sepheaders simple simplepost simplessl \ - sendrecv httpcustomheader certinfo chkspeed ftpgetinfo ftp-wildcard + sendrecv httpcustomheader certinfo chkspeed ftpgetinfo ftp-wildcard \ + smtp-multi.c # These examples require external dependencies that may not be commonly # available on POSIX systems, so don't bother attempting to compile them here. diff --git a/docs/examples/smtp-multi.c b/docs/examples/smtp-multi.c new file mode 100644 index 000000000..0a7aeebf9 --- /dev/null +++ b/docs/examples/smtp-multi.c @@ -0,0 +1,196 @@ +/***************************************************************************** + * _ _ ____ _ + * Project ___| | | | _ \| | + * / __| | | | |_) | | + * | (__| |_| | _ <| |___ + * \___|\___/|_| \_\_____| + * + * + * This is an example application source code sending SMTP mail using the + * multi interface. + */ + +#include <string.h> +#include <curl/curl.h> + +/* + * This is the list of basic details you need to tweak to get things right. + */ +#define USERNAME "user@example.com" +#define PASSWORD "123qwerty" +#define SMTPSERVER "smtp.example.com" +#define SMTPPORT ":587" /* it is a colon+port string, but you can set it + to "" to use the default port */ +#define RECEPIENT "receipient@example.com" +#define MAILFROM "<realuser@example.com>" + +#define MULTI_PERFORM_HANG_TIMEOUT 60 * 1000 + +/* Note that you should include the actual meta data headers here as well if + you want the mail to have a Subject, another From:, show a To: or whatever + you think your mail should feature! */ +static const char *text[]={ + "one\n", + "two\n", + "three\n", + " Hello, this is CURL email SMTP\n", + NULL +}; + +struct WriteThis { + int counter; +}; + +static size_t read_callback(void *ptr, size_t size, size_t nmemb, void *userp) +{ + struct WriteThis *pooh = (struct WriteThis *)userp; + const char *data; + + if(size*nmemb < 1) + return 0; + + data = text[pooh->counter]; + + if(data) { + size_t len = strlen(data); + memcpy(ptr, data, len); + pooh->counter++; /* advance pointer */ + return len; + } + return 0; /* no more data left to deliver */ +} + +static struct timeval tvnow(void) +{ + /* + ** time() returns the value of time in seconds since the Epoch. + */ + struct timeval now; + now.tv_sec = (long)time(NULL); + now.tv_usec = 0; + return now; +} + +static long tvdiff(struct timeval newer, struct timeval older) +{ + return (newer.tv_sec-older.tv_sec)*1000+ + (newer.tv_usec-older.tv_usec)/1000; +} + +int main(void) +{ + CURL *curl; + CURLM *mcurl; + int still_running = 1; + struct timeval mp_start; + char mp_timedout = 0; + struct WriteThis pooh; + struct curl_slist* rcpt_list = NULL; + + pooh.counter = 0; + + curl_global_init(CURL_GLOBAL_DEFAULT); + + curl = curl_easy_init(); + if(!curl) + return 1; + + mcurl = curl_multi_init(); + if(!mcurl) + return 2; + + rcpt_list = curl_slist_append(rcpt_list, RECEPIENT); + /* more addresses can be added here + rcpt_list = curl_slist_append(rcpt_list, "others@example.com"); + */ + + curl_easy_setopt(curl, CURLOPT_URL, "smtp://" SMTPSERVER SMTPPORT); + curl_easy_setopt(curl, CURLOPT_USERNAME, USERNAME); + curl_easy_setopt(curl, CURLOPT_PASSWORD, PASSWORD); + curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_callback); + curl_easy_setopt(curl, CURLOPT_MAIL_FROM, MAILFROM); + curl_easy_setopt(curl, CURLOPT_MAIL_RCPT, rcpt_list); + curl_easy_setopt(curl, CURLOPT_USE_SSL, CURLUSESSL_ALL); + curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER,0); + curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0); + curl_easy_setopt(curl, CURLOPT_READDATA, &pooh); + curl_easy_setopt(curl, CURLOPT_VERBOSE, 1); + curl_easy_setopt(curl, CURLOPT_SSLVERSION, 0); + curl_easy_setopt(curl, CURLOPT_SSL_SESSIONID_CACHE, 0); + curl_multi_add_handle(mcurl, curl); + + mp_timedout = 0; + mp_start = tvnow(); + + /* we start some action by calling perform right away */ + curl_multi_perform(mcurl, &still_running); + + while(still_running) { + struct timeval timeout; + int rc; /* select() return code */ + + fd_set fdread; + fd_set fdwrite; + fd_set fdexcep; + int maxfd = -1; + + long curl_timeo = -1; + + FD_ZERO(&fdread); + FD_ZERO(&fdwrite); + FD_ZERO(&fdexcep); + + /* set a suitable timeout to play around with */ + timeout.tv_sec = 1; + timeout.tv_usec = 0; + + curl_multi_timeout(mcurl, &curl_timeo); + if(curl_timeo >= 0) { + timeout.tv_sec = curl_timeo / 1000; + if(timeout.tv_sec > 1) + timeout.tv_sec = 1; + else + timeout.tv_usec = (curl_timeo % 1000) * 1000; + } + + /* get file descriptors from the transfers */ + curl_multi_fdset(mcurl, &fdread, &fdwrite, &fdexcep, &maxfd); + + /* In a real-world program you OF COURSE check the return code of the + function calls. On success, the value of maxfd is guaranteed to be + greater or equal than -1. We call select(maxfd + 1, ...), specially in + case of (maxfd == -1), we call select(0, ...), which is basically equal + to sleep. */ + + rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout); + + if (tvdiff(tvnow(), mp_start) > MULTI_PERFORM_HANG_TIMEOUT) { + fprintf(stderr, "ABORTING TEST, since it seems " + "that it would have run forever.\n"); + break; + } + + switch(rc) { + case -1: + /* select error */ + break; + case 0: + /* timeout, do something else */ + break; + default: + /* one or more of curl's file descriptors say there's data to read + or write */ + curl_multi_perform(mcurl, &still_running); + break; + } + } + + curl_slist_free_all(rcpt_list); + curl_multi_remove_handle(mcurl, curl); + curl_multi_cleanup(mcurl); + curl_easy_cleanup(curl); + curl_global_cleanup(); + return 0; +} + + |