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Added new virtualhost examples and functions
- added examples/example_vhost.c which shows, in detail, how to use evhtp vhosts and aliases. - Added new function evhtp_add_aliases(). Much like add_alias, this allows for a variable number of aliases to be added within one call. - some error logging updates
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,127 @@ | ||
| #include <stdio.h> | ||
| #include <stdlib.h> | ||
| #include <string.h> | ||
| #include <stdint.h> | ||
| #include <errno.h> | ||
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| #include "internal.h" | ||
| #include "../log.h" | ||
| #include "evhtp/evhtp.h" | ||
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| #define make_response(cb) do { \ | ||
| evbuffer_add_printf(req->buffer_out, \ | ||
| "%s = host:%s, arg:%s\n", cb, \ | ||
| evhtp_header_find(req->headers_in, "Host"), \ | ||
| (char *)arg); \ | ||
| } while (0) | ||
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| static void | ||
| vhost_1__callback_(evhtp_request_t * req, void * arg) { | ||
| /* these should be our callbacks for our evhtp.io hosts */ | ||
| make_response("vhost_1__callback_"); | ||
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| evhtp_send_reply(req, EVHTP_RES_OK); | ||
| } | ||
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| static void | ||
| vhost_2__callback_(evhtp_request_t * req, void * arg) { | ||
| /* these should be our callbacks for our google hosts */ | ||
| make_response("vhost_2__callback_"); | ||
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| evhtp_send_reply(req, EVHTP_RES_OK); | ||
| } | ||
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| int | ||
| main(int argc, char ** argv) { | ||
| struct event_base * evbase; | ||
| evhtp_t * htp; | ||
| evhtp_t * htp_vhost_1; | ||
| evhtp_t * htp_vhost_2; | ||
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| evbase = event_base_new(); | ||
| evhtp_alloc_assert(evbase); | ||
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| /* allocate our main evhtp structure which vhosts are | ||
| * nested under | ||
| */ | ||
| htp = evhtp_new(evbase, NULL); | ||
| evhtp_alloc_assert(htp); | ||
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| /* create a evhtp structure for vhost_1 specific hostnames, | ||
| * this will match hostnames for 'evhtp.io' | ||
| * */ | ||
| htp_vhost_1 = evhtp_new(evbase, NULL); | ||
| evhtp_alloc_assert(htp_vhost_1); | ||
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| /* running a get on /vhost for htp_vhost_1 will be different | ||
| * from htp_vhost_2 due to the hostname we set below. | ||
| */ | ||
| evhtp_set_cb(htp_vhost_1, "/vhost", vhost_1__callback_, "evhtp.io domains"); | ||
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| /* create a evhtp structure for vhost_2 specific hostnames, | ||
| * this will match hostnames for 'google.com' | ||
| */ | ||
| htp_vhost_2 = evhtp_new(evbase, NULL); | ||
| evhtp_alloc_assert(htp_vhost_2); | ||
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| /* running a get on /vhost for http_vhost_2 will be different | ||
| * from the http_vhost_1 due to the hostname we set below. | ||
| */ | ||
| evhtp_set_cb(htp_vhost_2, "/vhost", vhost_2__callback_, "google.com domains"); | ||
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| /* if Host: evhtp.io is present, the callbacks fro htp_vhost_1 are | ||
| * used. We do this by adding the vhost_1 evhtp to the main htp ctx. | ||
| */ | ||
| evhtp_add_vhost(htp, "evhtp.io", htp_vhost_1); | ||
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| /* now lets set some virtual host aliases to evhtp.io */ | ||
| evhtp_add_aliases(htp_vhost_1, | ||
| "www.evhtp.io", | ||
| "web.evhtp.io", NULL); | ||
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| /* If Host: google.com is present, the callbacks for htp_vhost_2 are | ||
| * used instead. This must be attached to the main htp context. | ||
| */ | ||
| evhtp_add_vhost(htp, "google.com", htp_vhost_2); | ||
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| /* now add some virtual host aliases for google.com */ | ||
| evhtp_add_aliases(htp_vhost_2, | ||
| "www.google.com", | ||
| "web.google.com", | ||
| "inbox.google.com", NULL); | ||
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| /* we can also append a single alias to vhost_2 like this */ | ||
| evhtp_add_alias(htp_vhost_2, "gmail.google.com"); | ||
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| /* now bind and listen on our server */ | ||
| evhtp_bind_socket(htp, "127.0.0.1", 0, 128); | ||
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| { | ||
| struct sockaddr_in sin; | ||
| socklen_t len = sizeof(struct sockaddr); | ||
| uint16_t port; | ||
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| getsockname( | ||
| evconnlistener_get_fd(htp->server), | ||
| (struct sockaddr *)&sin, &len); | ||
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| port = ntohs(sin.sin_port); | ||
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| log_info("[[ try the following commands and you should see 'evhtp.io domains' ]]"); | ||
| log_info("====================================================================="); | ||
| log_info("curl -H'Host: evhtp.io' http://127.0.0.1:%d/vhost", port); | ||
| log_info("curl -H'Host: www.evhtp.io' http://127.0.0.1:%d/vhost", port); | ||
| log_info("curl -H'Host: web.evhtp.io' http://127.0.0.1:%d/vhost", port); | ||
| log_info("========================================================================"); | ||
| log_info("[[ try the following commands and you should see 'google.com domains' ]]"); | ||
| log_info("========================================================================"); | ||
| log_info("curl -H'Host: google.com' http://127.0.0.1:%d/vhost", port); | ||
| log_info("curl -H'Host: www.google.com' http://127.0.0.1:%d/vhost", port); | ||
| log_info("curl -H'Host: web.google.com' http://127.0.0.1:%d/vhost", port); | ||
| log_info("curl -H'Host: inbox.google.com' http://127.0.0.1:%d/vhost", port); | ||
| log_info("curl -H'Host: gmail.google.com' http://127.0.0.1:%d/vhost", port); | ||
| } | ||
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| event_base_loop(evbase, 0); | ||
| } /* main */ |
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