HTTP "auth done right". See lib/README.httpauth

1 files changed, 135 insertions, 0 deletions

diff --git a/docs/examples/anyauthput.c b/docs/examples/anyauthput.c
new file mode 100644
index 000000000..c5486333e
--- /dev/null
+++ b/docs/examples/anyauthput.c
@@ -0,0 +1,135 @@
+/*****************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * $Id$
+ */
+
+#include <stdio.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+
+#include <curl/curl.h>
+
+#if LIBCURL_VERSION_NUM < 0x070c03
+#error "upgrade your libcurl to no less than 7.12.3"
+#endif
+
+/*
+ * This example shows a HTTP PUT operation with authentiction using "any"
+ * type. It PUTs a file given as a command line argument to the URL also given
+ * on the command line.
+ *
+ * Since libcurl 7.12.3, using "any" auth and POST/PUT requires a set ioctl
+ * function.
+ *
+ * This example also uses its own read callback.
+ */
+
+/* ioctl callback function */
+static curlioerr my_ioctl(CURL *handle, curliocmd cmd, void *userp)
+{
+  int fd = (int)userp;
+
+  (void)handle; /* not used in here */
+
+  switch(cmd) {
+  case CURLIOCMD_RESTARTREAD:
+    /* mr libcurl kindly asks as to rewind the read data stream to start */
+    if(-1 == lseek(fd, 0, SEEK_SET))
+      /* couldn't rewind */
+      return CURLIOE_FAILRESTART;
+
+    break;
+
+  default: /* ignore unknown commands */
+    return CURLIOE_UNKNOWNCMD;
+  }
+  return CURLIOE_OK; /* success! */
+}
+
+/* read callback function, fread() look alike */
+size_t read_callback(void *ptr, size_t size, size_t nmemb, void *stream)
+{
+  size_t retcode;
+
+  int fd = (int)stream;
+
+  retcode = read(fd, ptr, size * nmemb);
+
+  fprintf(stderr, "*** We read %d bytes from file\n", retcode);
+
+  return retcode;
+}
+
+int main(int argc, char **argv)
+{
+  CURL *curl;
+  CURLcode res;
+  int hd ;
+  struct stat file_info;
+
+  char *file;
+  char *url;
+
+  if(argc < 3)
+    return 1;
+
+  file= argv[1];
+  url = argv[2];
+
+  /* get the file size of the local file */
+  hd = open(file, O_RDONLY) ;
+  fstat(hd, &file_info);
+
+  /* In windows, this will init the winsock stuff */
+  curl_global_init(CURL_GLOBAL_ALL);
+
+  /* get a curl handle */
+  curl = curl_easy_init();
+  if(curl) {
+    /* we want to use our own read function */
+    curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_callback);
+
+    /* which file to upload */
+    curl_easy_setopt(curl, CURLOPT_READDATA, hd);
+
+    /* set the ioctl function */
+    curl_easy_setopt(curl, CURLOPT_IOCTLFUNCTION, my_ioctl);
+
+    /* pass the file descriptor to the ioctl callback as well */
+    curl_easy_setopt(curl, CURLOPT_IOCTLDATA, hd);
+
+    /* enable "uploading" (which means PUT when doing HTTP) */
+    curl_easy_setopt(curl, CURLOPT_UPLOAD, TRUE) ;
+
+    /* specify target URL, and note that this URL should also include a file
+       name, not only a directory (as you can do with GTP uploads) */
+    curl_easy_setopt(curl,CURLOPT_URL, url);
+
+    /* and give the size of the upload, this supports large file sizes
+       on systems that have general support for it */
+    curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE, file_info.st_size);
+
+    /* tell libcurl we can use "any" auth, which lets the lib pick one, but it
+       also costs one extra round-trip and possibly sending of all the PUT
+       data twice!!! */
+    curl_easy_setopt(curl, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
+
+    /* set user name and password for the authentication */
+    curl_easy_setopt(curl, CURLOPT_USERPWD, "user:password");
+
+    /* Now run off and do what you've been told! */
+    res = curl_easy_perform(curl);
+
+    /* always cleanup */
+    curl_easy_cleanup(curl);
+  }
+  close(hd); /* close the local file */
+
+  curl_global_cleanup();
+  return 0;
+}