curl的http上传文件代码

浏览数：30 / 时间：2015年06月09日

int http_post_file(const char *url, const char *user, const char *pwd, const char *filename)
{
    assert(url != NULL);
    assert(user != NULL);
    assert(pwd != NULL);
    assert(filename != NULL);

    int ret = -1;
    CURL *curl = NULL;
    CURLcode code;
    CURLFORMcode formCode;
    int timeout = 15;

#define CHECK_FORM_ERROR(x)                                                /
    if ((formCode = (x)) != CURL_FORMADD_OK)                            /
    {                                                                    /
        fprintf(stderr, "curl_formadd[%d] error./n", formCode);            /
        goto out;                                                        /
    }

#define CHECK_SETOPT_ERROR(x)                                            /
    if ((code = (x)) != CURLE_OK)                                        /
    {                                                                    /
        fprintf(stderr, "curl_easy_setopt[%d] error./n", code);            /
        goto all;                                                        /
    }

    struct curl_httppost *post=NULL;
    struct curl_httppost *last=NULL;
    struct curl_slist *headerlist=NULL;

    CHECK_FORM_ERROR( curl_formadd(&post, &last, CURLFORM_COPYNAME, "user",
        CURLFORM_COPYCONTENTS, user,
        CURLFORM_END));

    CHECK_FORM_ERROR( curl_formadd(&post, &last, CURLFORM_COPYNAME, "password",
        CURLFORM_COPYCONTENTS, pwd,
        CURLFORM_END));

    CHECK_FORM_ERROR( curl_formadd(&post, &last, CURLFORM_COPYNAME, "file",
        CURLFORM_FILE, filename,
        CURLFORM_END));

    CHECK_FORM_ERROR( curl_formadd(&post, &last,
        CURLFORM_COPYNAME, "submit",
        CURLFORM_COPYCONTENTS, "upload",
        CURLFORM_END));

    curl = curl_easy_init();
    if(curl == NULL)
    {
        fprintf(stderr, "curl_easy_init() error./n");
        goto out;
    }

    CHECK_SETOPT_ERROR(curl_easy_setopt(curl, CURLOPT_HEADER, 0));
    CHECK_SETOPT_ERROR(curl_easy_setopt(curl, CURLOPT_URL, url));
    CHECK_SETOPT_ERROR(curl_easy_setopt(curl, CURLOPT_HTTPPOST, post));
    CHECK_SETOPT_ERROR(curl_easy_setopt(curl, CURLOPT_TIMEOUT, timeout));

    code = curl_easy_perform(curl);
    if(code != CURLE_OK)
    {
        fprintf(stderr, "curl_easy_perform[%d] error./n", code);
        goto all;
    }

    ret = 0;

all:
    curl_easy_cleanup(curl);
out:
    curl_formfree(post);

    return ret;
}