[OpenWrt-Devel] [PATCH uclient v2] uclient-fetch: add option to read POST data from file
Jo-Philipp Wich
jo at mein.io
Fri Jun 12 16:42:11 EDT 2020
Hi Gio, Daniel,
> [...]
> ---
> v2: make it compile, handle errors, add usage info, fix typos
>
> uclient-fetch.c | 31 +++++++++++++++++++++++++++++--
> 1 file changed, 29 insertions(+), 2 deletions(-)
>
> diff --git a/uclient-fetch.c b/uclient-fetch.c
> index a06be5d..6119328 100644
> --- a/uclient-fetch.c
> +++ b/uclient-fetch.c
> @@ -43,6 +43,7 @@
>
> static const char *user_agent = "uclient-fetch";
> static const char *post_data;
> +static const char *post_file;
> static struct ustream_ssl_ctx *ssl_ctx;
> static const struct ustream_ssl_ops *ssl_ops;
> static int quiet = false;
> @@ -334,7 +335,7 @@ static int init_request(struct uclient *cl)
>
> msg_connecting(cl);
>
> - rc = uclient_http_set_request_type(cl, post_data ? "POST" : "GET");
> + rc = uclient_http_set_request_type(cl, post_data || post_file ? "POST" : "GET");
> if (rc)
> return rc;
>
> @@ -347,6 +348,26 @@ static int init_request(struct uclient *cl)
> uclient_http_set_header(cl, "Content-Type", "application/x-www-form-urlencoded");
> uclient_write(cl, post_data, strlen(post_data));
> }
> + else if(post_file)
> + {
> + FILE *input_file;
> + uclient_http_set_header(cl, "Content-Type", "application/x-www-form-urlencoded");
I think the Content-Type header should be configurable. Hard coding it to
x-www-form-urlencoded severely limits the usefulness of this post-data feature
(regardless of it being passed via command line argument or file) - or did I
miss the ability to override it?
> +
> + input_file = fopen(post_file, "r");
> + if (!input_file)
> + return errno;
> +
> + char tbuf[1000];
It probably doesn't matter but why not using a base-2 value here? E.g. 1024.
> + size_t rlen = 0;
> + do
> + {
> + rlen = fread(tbuf, 1, 1000, input_file);
Please replace 1000 with sizeof(tbuf).
> + uclient_write(cl, tbuf, rlen);
> + }
> + while(rlen);
> +
> + fclose(input_file);
> + }
>
> rc = uclient_request(cl);
> if (rc)
> @@ -460,6 +481,7 @@ static int usage(const char *progname)
> " --password=<password> HTTP authentication password\n"
> " --user-agent|-U <str> Set HTTP user agent\n"
> " --post-data=STRING use the POST method; send STRING as the data\n"
> + " --post-file=FILE use the POST method; send FILE as the data\n"
> " --spider|-s Spider mode - only check file existence\n"
> " --timeout=N|-T N Set connect/request timeout to N seconds\n"
> " --proxy=on|off|-Y on|off Enable/disable env var configured proxy\n"
> @@ -516,6 +538,7 @@ enum {
> L_PASSWORD,
> L_USER_AGENT,
> L_POST_DATA,
> + L_POST_FILE,
> L_SPIDER,
> L_TIMEOUT,
> L_CONTINUE,
> @@ -532,6 +555,7 @@ static const struct option longopts[] = {
> [L_PASSWORD] = { "password", required_argument },
> [L_USER_AGENT] = { "user-agent", required_argument },
> [L_POST_DATA] = { "post-data", required_argument },
> + [L_POST_FILE] = { "post-file", required_argument },
> [L_SPIDER] = { "spider", no_argument },
> [L_TIMEOUT] = { "timeout", required_argument },
> [L_CONTINUE] = { "continue", no_argument },
> @@ -598,6 +622,9 @@ int main(int argc, char **argv)
> case L_POST_DATA:
> post_data = optarg;
> break;
> + case L_POST_FILE:
> + post_file = optarg;
> + break;
> case L_SPIDER:
> no_output = true;
> break;
> @@ -718,7 +745,7 @@ int main(int argc, char **argv)
> /* no error received, we can enter main loop */
> uloop_run();
> } else {
> - fprintf(stderr, "Failed to establish connection\n");
> + fprintf(stderr, "Failed to send request: %s\n", strerror(rc));
This looks unrelated? Maybe add some "also fix error message in case of send
failure" note to the commit message if it is intended.
> error_ret = 4;
> }
>
>
Regards,
Jo
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