Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/curl/docs/examples/imap-tls.c @ 22:d77477b4e151

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Let _int_rc() also handle (i.e. ignore) a local version suffix
author Franz Glasner <fzglas.hg@dom66.de>
date Fri, 19 Sep 2025 12:05:57 +0200
parents b50eed0cc0ef
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /***************************************************************************
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2 * _ _ ____ _
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3 * Project ___| | | | _ \| |
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4 * / __| | | | |_) | |
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5 * | (__| |_| | _ <| |___
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6 * \___|\___/|_| \_\_____|
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7 *
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8 * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel@haxx.se>, et al.
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9 *
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10 * This software is licensed as described in the file COPYING, which
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11 * you should have received as part of this distribution. The terms
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12 * are also available at https://curl.haxx.se/docs/copyright.html.
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13 *
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14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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15 * copies of the Software, and permit persons to whom the Software is
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16 * furnished to do so, under the terms of the COPYING file.
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17 *
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18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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19 * KIND, either express or implied.
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20 *
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21 ***************************************************************************/
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23 /* <DESC>
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24 * IMAP example using TLS
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25 * </DESC>
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26 */
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28 #include <stdio.h>
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29 #include <curl/curl.h>
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31 /* This is a simple example showing how to fetch mail using libcurl's IMAP
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32 * capabilities. It builds on the imap-fetch.c example adding transport
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33 * security to protect the authentication details from being snooped.
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34 *
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35 * Note that this example requires libcurl 7.30.0 or above.
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36 */
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38 int main(void)
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39 {
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40 CURL *curl;
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41 CURLcode res = CURLE_OK;
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43 curl = curl_easy_init();
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44 if(curl) {
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45 /* Set username and password */
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46 curl_easy_setopt(curl, CURLOPT_USERNAME, "user");
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47 curl_easy_setopt(curl, CURLOPT_PASSWORD, "secret");
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49 /* This will fetch message 1 from the user's inbox */
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50 curl_easy_setopt(curl, CURLOPT_URL,
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51 "imap://imap.example.com/INBOX/;UID=1");
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53 /* In this example, we'll start with a plain text connection, and upgrade
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54 * to Transport Layer Security (TLS) using the STARTTLS command. Be careful
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55 * of using CURLUSESSL_TRY here, because if TLS upgrade fails, the transfer
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56 * will continue anyway - see the security discussion in the libcurl
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57 * tutorial for more details. */
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58 curl_easy_setopt(curl, CURLOPT_USE_SSL, (long)CURLUSESSL_ALL);
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60 /* If your server doesn't have a valid certificate, then you can disable
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61 * part of the Transport Layer Security protection by setting the
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62 * CURLOPT_SSL_VERIFYPEER and CURLOPT_SSL_VERIFYHOST options to 0 (false).
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63 * curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);
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64 * curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0L);
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65 *
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66 * That is, in general, a bad idea. It is still better than sending your
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67 * authentication details in plain text though. Instead, you should get
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68 * the issuer certificate (or the host certificate if the certificate is
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69 * self-signed) and add it to the set of certificates that are known to
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70 * libcurl using CURLOPT_CAINFO and/or CURLOPT_CAPATH. See docs/SSLCERTS
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71 * for more information. */
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72 curl_easy_setopt(curl, CURLOPT_CAINFO, "/path/to/certificate.pem");
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74 /* Since the traffic will be encrypted, it is very useful to turn on debug
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75 * information within libcurl to see what is happening during the
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76 * transfer */
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77 curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
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79 /* Perform the fetch */
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80 res = curl_easy_perform(curl);
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81
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82 /* Check for errors */
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83 if(res != CURLE_OK)
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84 fprintf(stderr, "curl_easy_perform() failed: %s\n",
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85 curl_easy_strerror(res));
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87 /* Always cleanup */
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88 curl_easy_cleanup(curl);
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89 }
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91 return (int)res;
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92 }