digitalmars.D.learn - libcurl acting differently to curl.exe
I'm trying to use libcurl in D to download a page that requires
logging in first. At the moment though, I can't even get the
logging in working. I tried with curl.exe, got it working, and
used the --libcurl command to export C code that I then turned
into (I think) equivalent D code.
The problem is that when I POST the login form, curl.exe gets a
HTTP 200 to the correct page, whereas libcurl gets a HTTP 302
back to the login page, which is the same behaviour I noticed
when cookies weren't being saved/reused.
I've tried with the HTTP struct functions, and also setting curl
options explicitly like the C code does. Is there something I've
missed?
import std.file;
import std.net.curl;
import std.stdio;
void main() {
getLogon();
postLogon();
getIndex();
}
void getLogon()
{
auto http = HTTP();
http.onReceive = (ubyte[] data) { /+ drop +/
std.file.write("logon1.html", data);
/+writeln(cast(char[])(data)); stdout.flush;+/ return
data.length; };
http.handle.set(CurlOption.tcp_nodelay, 1);
http.handle.set(CurlOption.buffersize, 102400);
http.handle.set(CurlOption.noprogress, 1);
//http.handle.set(CurlOption.useragent, "curl/7.57.0");
http.handle.set(CurlOption.maxredirs, 50);
//http.handle.set(CurlOption.cainfo,
"C:\\Users\\Josh\\Downloads\\curl-7.57.0-win64-mingw\\bin\\curl-ca-bundle.crt");
http.handle.set(CurlOption.cookiejar, "cookie.dat");
http.handle.set(CurlOption.cookiefile, "cookie.dat");
http.handle.set(CurlOption.verbose, 1);
http.handle.set(CurlOption.url, "https://foo.com/logon.php");
http.method(HTTP.Method.get);
http.perform();
}
void doLogon()
{
auto http = HTTP();
http.onReceive = (ubyte[] data) { /+ drop +/
std.file.write("logon2.html", data);
/+writeln(cast(char[])(data)); stdout.flush;+/ return
data.length; };
http.handle.set(CurlOption.tcp_nodelay, 1);
http.handle.set(CurlOption.buffersize, 102400);
http.handle.set(CurlOption.noprogress, 1);
//http.handle.set(CurlOption.useragent, "curl/7.57.0");
http.handle.set(CurlOption.maxredirs, 50);
//http.handle.set(CurlOption.cainfo,
"C:\\Users\\Josh\\Downloads\\curl-7.57.0-win64-mingw\\bin\\curl-ca-bundle.crt");
http.handle.set(CurlOption.cookiejar, "cookie.dat");
http.handle.set(CurlOption.cookiefile, "cookie.dat");
http.handle.set(CurlOption.verbose, 1);
http.handle.set(CurlOption.url, "https://foo.com/logon.php");
http.handle.set(CurlOption.postfields,
"username=user&password=pass&Logon=submit");
http.handle.set(CurlOption.postfieldsize_large, 52);
http.method(HTTP.Method.post);
http.perform();
}
void getIndex()
{
auto http = HTTP();
http.onReceive = (ubyte[] data) { /+ drop +/
std.file.write("index.html", data);
/+writeln(cast(char[])(data)); stdout.flush;+/ return
data.length; };
http.handle.set(CurlOption.tcp_nodelay, 1);
http.handle.set(CurlOption.buffersize, 102400);
http.handle.set(CurlOption.noprogress, 1);
//http.handle.set(CurlOption.useragent, "curl/7.57.0");
http.handle.set(CurlOption.maxredirs, 50);
//http.handle.set(CurlOption.cainfo,
"C:\\Users\\Josh\\Downloads\\curl-7.57.0-win64-mingw\\bin\\curl-ca-bundle.crt");
http.handle.set(CurlOption.cookiejar, "cookie.dat");
http.handle.set(CurlOption.cookiefile, "cookie.dat");
http.handle.set(CurlOption.verbose, 1);
http.handle.set(CurlOption.url, "https://foo.com/index.php");
http.method(HTTP.Method.get);
http.perform();
}
libcurl verbose dump: https://pastebin.com/Sq60CLHV
curl.exe verbose dump: https://pastebin.com/KBDDNq9k
Thanks,
Josh
Dec 10 2017
The POST C code was: /********* Sample code generated by the curl command line tool ********** * All curl_easy_setopt() options are documented at: * https://curl.haxx.se/libcurl/c/curl_easy_setopt.html ************************************************************************/ #include <curl/curl.h> int main(int argc, char *argv[]) { CURLcode ret; CURL *hnd; hnd = curl_easy_init(); curl_easy_setopt(hnd, CURLOPT_BUFFERSIZE, 102400L); curl_easy_setopt(hnd, CURLOPT_URL, "https://foo.com/logon.php"); curl_easy_setopt(hnd, CURLOPT_POSTFIELDS, "username=user&password=pass&Logon=submit"); curl_easy_setopt(hnd, CURLOPT_POSTFIELDSIZE_LARGE, (curl_off_t)52); curl_easy_setopt(hnd, CURLOPT_USERAGENT, "curl/7.57.0"); curl_easy_setopt(hnd, CURLOPT_MAXREDIRS, 50L); curl_easy_setopt(hnd, CURLOPT_HTTP_VERSION, (long)CURL_HTTP_VERSION_2TLS); curl_easy_setopt(hnd, CURLOPT_CAINFO, "C:\\Users\\Josh\\Downloads\\curl-7.57.0-win64-mingw\\bin\\curl-ca-bundle.crt"); curl_easy_setopt(hnd, CURLOPT_SSH_KNOWNHOSTS, "C:\\Users\\Josh\\AppData\\Roaming/_ssh/known_hosts"); curl_easy_setopt(hnd, CURLOPT_COOKIEFILE, "cookie.dat"); curl_easy_setopt(hnd, CURLOPT_COOKIEJAR, "cookie.dat"); curl_easy_setopt(hnd, CURLOPT_VERBOSE, 1L); curl_easy_setopt(hnd, CURLOPT_TCP_KEEPALIVE, 1L); /* Here is a list of options the curl code used that cannot get generated as source easily. You may select to either not use them or implement them yourself. CURLOPT_WRITEDATA set to a objectpointer CURLOPT_INTERLEAVEDATA set to a objectpointer CURLOPT_WRITEFUNCTION set to a functionpointer CURLOPT_READDATA set to a objectpointer CURLOPT_READFUNCTION set to a functionpointer CURLOPT_SEEKDATA set to a objectpointer CURLOPT_SEEKFUNCTION set to a functionpointer CURLOPT_ERRORBUFFER set to a objectpointer CURLOPT_STDERR set to a objectpointer CURLOPT_DEBUGFUNCTION set to a functionpointer CURLOPT_DEBUGDATA set to a objectpointer CURLOPT_HEADERFUNCTION set to a functionpointer CURLOPT_HEADERDATA set to a objectpointer */ ret = curl_easy_perform(hnd); curl_easy_cleanup(hnd); hnd = NULL; return (int)ret; } /**** End of sample code ****/
Dec 10 2017
ikod <geller.garry gmail.com> On Monday, 11 December 2017 at 03:53:25 UTC, Josh wrote:The POST C code was: /********* Sample code generated by the curl command line tool ********** * All curl_easy_setopt() options are documented at: * https://curl.haxx.se/libcurl/c/curl_easy_setopt.htmlMaybe off-topic but you can try http://code.dlang.org/packages/requests.
Dec 11 2017