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examples: check more errors, fix cleanups, scope variables

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Inspired by Joshua's report on examples.

Closes #19055
This commit is contained in:
Viktor Szakats 2025-10-13 22:57:01 +02:00
parent 61dcb56743
commit 64ed2ea196
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GPG key ID: B5ABD165E2AEF201
42 changed files with 874 additions and 785 deletions
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67
docs/examples/usercertinmem.c
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@ -162,45 +162,46 @@ int main(void)
if(res)
return (int)res;
curl_global_init(CURL_GLOBAL_ALL);
ch = curl_easy_init();
curl_easy_setopt(ch, CURLOPT_VERBOSE, 0L);
curl_easy_setopt(ch, CURLOPT_HEADER, 0L);
curl_easy_setopt(ch, CURLOPT_NOPROGRESS, 1L);
curl_easy_setopt(ch, CURLOPT_NOSIGNAL, 1L);
curl_easy_setopt(ch, CURLOPT_WRITEFUNCTION, writefunction);
curl_easy_setopt(ch, CURLOPT_WRITEDATA, stdout);
curl_easy_setopt(ch, CURLOPT_HEADERFUNCTION, writefunction);
curl_easy_setopt(ch, CURLOPT_HEADERDATA, stderr);
curl_easy_setopt(ch, CURLOPT_SSLCERTTYPE, "PEM");
if(ch) {
curl_easy_setopt(ch, CURLOPT_VERBOSE, 0L);
curl_easy_setopt(ch, CURLOPT_HEADER, 0L);
curl_easy_setopt(ch, CURLOPT_NOPROGRESS, 1L);
curl_easy_setopt(ch, CURLOPT_NOSIGNAL, 1L);
curl_easy_setopt(ch, CURLOPT_WRITEFUNCTION, writefunction);
curl_easy_setopt(ch, CURLOPT_WRITEDATA, stdout);
curl_easy_setopt(ch, CURLOPT_HEADERFUNCTION, writefunction);
curl_easy_setopt(ch, CURLOPT_HEADERDATA, stderr);
curl_easy_setopt(ch, CURLOPT_SSLCERTTYPE, "PEM");
/* both VERIFYPEER and VERIFYHOST are set to 0 in this case because there is
no CA certificate */
/* both VERIFYPEER and VERIFYHOST are set to 0 in this case because there
is no CA certificate */
curl_easy_setopt(ch, CURLOPT_SSL_VERIFYPEER, 0L);
curl_easy_setopt(ch, CURLOPT_SSL_VERIFYHOST, 0L);
curl_easy_setopt(ch, CURLOPT_URL, "https://www.example.com/");
curl_easy_setopt(ch, CURLOPT_SSLKEYTYPE, "PEM");
curl_easy_setopt(ch, CURLOPT_SSL_VERIFYPEER, 0L);
curl_easy_setopt(ch, CURLOPT_SSL_VERIFYHOST, 0L);
curl_easy_setopt(ch, CURLOPT_URL, "https://www.example.com/");
curl_easy_setopt(ch, CURLOPT_SSLKEYTYPE, "PEM");
/* first try: retrieve page without user certificate and key -> fails */
res = curl_easy_perform(ch);
if(res == CURLE_OK)
printf("*** transfer succeeded ***\n");
else
printf("*** transfer failed ***\n");
/* first try: retrieve page without user certificate and key -> fails */
res = curl_easy_perform(ch);
if(res == CURLE_OK)
printf("*** transfer succeeded ***\n");
else
printf("*** transfer failed ***\n");
/* second try: retrieve page using user certificate and key -> succeeds
* load the certificate and key by installing a function doing the necessary
* "modifications" to the SSL CONTEXT just before link init
*/
curl_easy_setopt(ch, CURLOPT_SSL_CTX_FUNCTION, sslctx_function);
res = curl_easy_perform(ch);
if(res == CURLE_OK)
printf("*** transfer succeeded ***\n");
else
printf("*** transfer failed ***\n");
/* second try: retrieve page using user certificate and key -> succeeds
* load the certificate and key by installing a function doing
* the necessary "modifications" to the SSL CONTEXT just before link init
*/
curl_easy_setopt(ch, CURLOPT_SSL_CTX_FUNCTION, sslctx_function);
res = curl_easy_perform(ch);
if(res == CURLE_OK)
printf("*** transfer succeeded ***\n");
else
printf("*** transfer failed ***\n");
curl_easy_cleanup(ch);
curl_easy_cleanup(ch);
}
curl_global_cleanup();
return (int)res;
}