我遇到了一个奇怪的问题。
我开发了一个与huawei usb stick交互的库。在这个库中，我想从棒中读出一些信息，并通过电子邮件发送这些信息。为此，我使用C的curl库。
我已经开发了我的程序，而不是MAX OS X.9，它在那里运行得很好。
但我想在Rasberry pi上使用我的代码，使用基于debian的操作系统（raspian）。
但是这里我在执行程序时遇到内存错误：
Start sending message...
* About to connect() to XXXXXXX.kasserver.com port 587 (#0)
* Trying XX.XX.XX.XX...
* connected
* Connected to XXXXXXX.kasserver.com (XX.XX.XX.XX) port 587 (#0)
* SMTP 0x1ec1d88 state change from STOP to SERVERGREET
< 220 dd7300.kasserver.com ESMTP
> EHLO XXX
* SMTP 0x1ec1d88 state change from SERVERGREET to EHLO
< 250-XXX.kasserver.com
< 250-PIPELINING
< 250-SIZE 102400000
< 250-VRFY
< 250-ETRN
< 250-STARTTLS
< 250-AUTH PLAIN LOGIN
< 250-AUTH=PLAIN LOGIN
< 250-ENHANCEDSTATUSCODES
< 250-8BITMIME
< 250 DSN
> STARTTLS
* SMTP 0x1ec1d88 state change from EHLO to STARTTLS
< 220 2.0.0 Ready to start TLS
*** glibc detected *** ./test2: free(): invalid next size (fast): 0x01ec5db8 ***
Aborted
最奇怪的是，我可以编译并运行curl网站上的示例代码而不会出现任何问题：
我的代码与示例没什么不同。对于调试，我使用了示例字符串数组以及相同的配置。我目前没有使用通过函数参数传递的电子邮件文本：
char *payload_text[] = {
"Date: Mon, 29 Nov 2010 21:54:29 +1100\r\n",
"To: " mail_to "\r\n",
"From: " mail_from "(Example User)\r\n",
//"Cc: " CC "(Another example User)\r\n",
//"Message-ID: <dcd7cb36-11db-487a-9f3a-e652a9458efd@rfcpedant.example.org>\r\n",
"Subject: SMTP SSL example message\r\n",
"\r\n", /* empty line to divide headers from body, see RFC5322 */
"The body of the message starts here.\r\n",
"\r\n",
"It could be a lot of lines, could be MIME encoded, whatever.\r\n",
"Check RFC5322.\r\n",
NULL
};
char **payLoadSMTP = NULL;
struct upload_status {
int lines_read;
};
/**
* helper function for curl email send process
*
* @param ptr pointer to target structure for curl
* @param size size of source
* @param nmemb not quite clear
* @param userp pointer to source
*
* @return size_t length of data
*/
/*******************************************************/
static size_t payload_source(void *ptr, size_t size, size_t nmemb, void *userp)
/*******************************************************/
{
struct upload_status *upload_ctx = (struct upload_status *)userp;
const char *data;
printf("size: %i, nmemb: %i \n", size, nmemb);
if((size == 0) || (nmemb == 0) || ((size*nmemb) < 1)) {
return 0;
}
data = payload_text[upload_ctx->lines_read];
//data = payLoadSMTP[upload_ctx->lines_read];
if(data) {
size_t len = strlen(data);
memcpy(ptr, data, len);
printf("data[%i]: %s\n", upload_ctx->lines_read, data);
upload_ctx->lines_read++;
return len;
}
return 0;
}
/**
* send email with before created payload char array
*
* @param payloadText array over strings
*
* @return true, if playload was correct; falso if payload was empty
*/
/*******************************************************/
bool sendEmail(char **payloadText)
/*******************************************************/
{
CURL *curl;
CURLcode res = CURLE_OK;
struct curl_slist *recipients = NULL;
struct upload_status upload_ctx;
upload_ctx.lines_read = 0;
payLoadSMTP = payloadText;
if(payLoadSMTP == NULL)
{
return false;
}
curl = curl_easy_init();
if(curl) {
/* Set username and password */
curl_easy_setopt(curl, CURLOPT_USERNAME, mail_user);
curl_easy_setopt(curl, CURLOPT_PASSWORD, mail_pwd);
/* This is the URL for your mailserver. Note the use of port 587 here,
* instead of the normal SMTP port (25). Port 587 is commonly used for
* secure mail submission (see RFC4403), but you should use whatever
* matches your server configuration. */
curl_easy_setopt(curl, CURLOPT_URL, mail_url);
/* In this example, we'll start with a plain text connection, and upgrade
* to Transport Layer Security (TLS) using the STARTTLS command. Be careful
* of using CURLUSESSL_TRY here, because if TLS upgrade fails, the transfer
* will continue anyway - see the security discussion in the libcurl
* tutorial for more details. */
curl_easy_setopt(curl, CURLOPT_USE_SSL, (long)CURLUSESSL_ALL);
/* If your server doesn't have a valid certificate, then you can disable
* part of the Transport Layer Security protection by setting the
* CURLOPT_SSL_VERIFYPEER and CURLOPT_SSL_VERIFYHOST options to 0 (false).
* curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);
* curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0L);
* That is, in general, a bad idea. It is still better than sending your
* authentication details in plain text though.
* Instead, you should get the issuer certificate (or the host certificate
* if the certificate is self-signed) and add it to the set of certificates
* that are known to libcurl using CURLOPT_CAINFO and/or CURLOPT_CAPATH. See
* docs/SSLCERTS for more information. */
//curl_easy_setopt(curl, CURLOPT_CAINFO, "/etc/ssl/certs/ca-certificates.crt");
//curl_easy_setopt(curl, CURLOPT_CAPATH, "/etc/ssl/certs/");
/* Note that this option isn't strictly required, omitting it will result in
* libcurl sending the MAIL FROM command with empty sender data. All
* autoresponses should have an empty reverse-path, and should be directed
* to the address in the reverse-path which triggered them. Otherwise, they
* could cause an endless loop. See RFC 5321 Section 4.5.5 for more details.
*/
curl_easy_setopt(curl, CURLOPT_MAIL_FROM, mail_from);
/* Add two recipients, in this particular case they correspond to the
* To: and Cc: addressees in the header, but they could be any kind of
* recipient. */
recipients = curl_slist_append(recipients, mail_to);
//recipients = curl_slist_append(recipients, CC);
curl_easy_setopt(curl, CURLOPT_MAIL_RCPT, recipients);
/* We're using a callback function to specify the payload (the headers and
* body of the message). You could just use the CURLOPT_READDATA option to
* specify a FILE pointer to read from. */
curl_easy_setopt(curl, CURLOPT_READFUNCTION, payload_source);
curl_easy_setopt(curl, CURLOPT_READDATA, &upload_ctx);
curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
/* Since the traffic will be encrypted, it is very useful to turn on debug
* information within libcurl to see what is happening during the transfer.
*/
curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
printf("\nStart sending message...\n");
/* Send the message */
res = curl_easy_perform(curl);
printf("...Finished sending message.\n");
/* Check for errors */
if(res != CURLE_OK)
fprintf(stderr, "curl_easy_perform() failed: %s\n",
curl_easy_strerror(res));
printf("recipients cleanup\n");
/* Free the list of recipients */
curl_slist_free_all(recipients);
printf("curl cleanup\n");
/* Always cleanup */
curl_easy_cleanup(curl);
printf("cleanup finished\n");
payLoadSMTP = NULL;
return true;
}
return false;
}
用户名，密码，网址等参数定义了#define常量。
Doe的任何人都对我的问题有所了解？