File Upload with libcurl

This is a discussion on File Upload with libcurl within the Networking/Device Communication forums, part of the General Programming Boards category; Using VC++6 on XP, I am trying to upload a small jpeg file to a script that looks like: PHP ...

  1. #1
    Registered User Tonto's Avatar
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    File Upload with libcurl

    Using VC++6 on XP, I am trying to upload a small jpeg file to a script that looks like:

    PHP Code:
    <form method="post" enctype="multipart/form-data" action="upload.php">

            
    File: <input type="file" name="file" size="40"> <br>
            
    Name: <input type="text" name="name" size="40"> <br>
            <
    input type="submit" value="send" name="submit"> <br>

    </
    form
    The code I am made is this:

    Code:
    #include <curl.h>
    #include <stdio.h>
    
    int main(int argc, char *argv[])
    {
    	CURL *curl;
    	CURLcode res;
    
    	HttpPost* post =	NULL;
    	HttpPost* last =	NULL;
    
    	curl = curl_easy_init();
    	if(curl)
    	{
    		curl_formadd(&post, &last, 
    			CURLFORM_COPYNAME, "file",
    			CURLFORM_FILE, "C:\\rect.jpg",
    			CURLFORM_END);
    
    		curl_formadd(&post, &last, 
    			CURLFORM_COPYNAME, "name",
    			CURLFORM_FILE, "rect.jpg",
    			CURLFORM_END);
    
    		curl_easy_setopt(curl, CURLOPT_URL, "http://zxcvbn.t35.com/test.php");
    		curl_easy_setopt(curl, CURLOPT_HTTPPOST, post);
    
    		res = curl_easy_perform(curl);
    		if(res)
    		{
    			printf("curl_easy_perform failed: %d\n", res);
    		}
    		curl_formfree(post);
    	}
    	else
    		printf("curl_easy_init failed\n");
    
    	return 0;
    }
    And I am getting the error:

    curl_easy_perform failed: 7

  2. #2
    and the hat of wrongness Salem's Avatar
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    Maybe?
    CURLE_COULDNT_CONNECT, /* 7 */

  3. #3
    Registered User Tonto's Avatar
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    Sorry I forgot to check error codes, and I had forgotton to give the program priveledges and was on a limited account. I have now also changed it from C:\\rect.jpg to rect.jpg and had to move the executable because I was getting a read error (26). Now, I'm getting back from my web script: No file specified. This is the script;

    PHP Code:
    <?php

    if($_FILES['file']['name'] != "")
    {
        
    copy ($_FILES['file']['tmp_name'], "/uploads" $_FILES['file']['name'])
        or die (
    "Could not copy file");
    }
    else

        die( 
    "No file specified" ); 
    }

    ?>

  4. #4
    and the hat of wrongness Salem's Avatar
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    Are you using ethereal to watch
    a) what your browser does successfully when it uploads
    b) what your program fails to do

  5. #5
    Registered User Tonto's Avatar
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    Problem was with my script working with the host mostly. Thanks for the help. Final code:

    Code:
    	curl = curl_easy_init();
    	if(curl)
    	{
    		curl_formadd(&post, &last, 
    			CURLFORM_COPYNAME, "file",
    			CURLFORM_FILE, "C:\\rect.jpg",
    			CURLFORM_END);
    
    		curl_formadd(&post, &last, 
    			CURLFORM_COPYNAME, "name",
    			CURLFORM_COPYCONTENTS, "rect",
    			CURLFORM_END);
    
    		curl_easy_setopt(curl, CURLOPT_URL, "http://blah.com/upload.php");
    		curl_easy_setopt(curl, CURLOPT_HTTPPOST, post);
    
    		res = curl_easy_perform(curl);
    		if(res)
    		{
    			return 0;
    		}
    		
    		curl_formfree(post);
    	}
    	else 
    	{
    		return 0;
    	}
    
    	curl_easy_cleanup(curl);

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