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zhttpd.c
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/*
* zimg - high performance image storage and processing system.
* http://zimg.buaa.us
*
* Copyright (c) 2013-2014, Peter Zhao <[email protected]>.
* All rights reserved.
*
* Use and distribution licensed under the BSD license.
* See the LICENSE file for full text.
*
*/
/**
* @file zhttpd.c
* @brief http protocol parse functions.
* @author 招牌疯子 [email protected]
* @version 3.0.0
* @date 2014-08-14
*/
#include <stdio.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <fcntl.h>
#include "zhttpd.h"
#include "zimg.h"
#include "zmd5.h"
#include "zutil.h"
#include "zlog.h"
#include "zdb.h"
#include "zaccess.h"
#include "cjson/cJSON.h"
typedef struct {
evhtp_request_t *req;
thr_arg_t *thr_arg;
char address[16];
int partno;
int succno;
int check_name;
} mp_arg_t;
int zimg_etag_set(evhtp_request_t *request, char *buff, size_t len);
zimg_headers_conf_t * conf_get_headers(const char *hdr_str);
static int zimg_headers_add(evhtp_request_t *req, zimg_headers_conf_t *hcf);
void free_headers_conf(zimg_headers_conf_t *hcf);
static evthr_t * get_request_thr(evhtp_request_t *request);
static int print_headers(evhtp_header_t * header, void * arg);
void add_info(MagickWand *im, evhtp_request_t *req);
void dump_request_cb(evhtp_request_t *req, void *arg);
void echo_request_cb(evhtp_request_t *req, void *arg);
void post_request_cb(evhtp_request_t *req, void *arg);
void get_request_cb(evhtp_request_t *req, void *arg);
void admin_request_cb(evhtp_request_t *req, void *arg);
void info_request_cb(evhtp_request_t *req, void *arg);
static const char * post_error_list[] = {
"Internal error.",
"File type not support.",
"Request method error.",
"Access error.",
"Request body parse error.",
"Content-Length error.",
"Content-Type error.",
"File too large.",
"Request url illegal.",
"Image not existed."
};
static const char * method_strmap[] = {
"GET",
"HEAD",
"POST",
"PUT",
"DELETE",
"MKCOL",
"COPY",
"MOVE",
"OPTIONS",
"PROPFIND",
"PROPATCH",
"LOCK",
"UNLOCK",
"TRACE",
"CONNECT",
"PATCH",
"UNKNOWN",
};
/**
* @brief zimg_etag_set set zimg response etag
*
* @param request the request of evhtp
* @param buff response body buffer
* @param len body buffer len
*
* @return 1 for set true and 2 for 304
*/
int zimg_etag_set(evhtp_request_t *request, char *buff, size_t len)
{
int result = 1;
LOG_PRINT(LOG_DEBUG, "Begin to Caculate MD5...");
md5_state_t mdctx;
md5_byte_t md_value[16];
char md5sum[33];
int i;
int h, l;
md5_init(&mdctx);
md5_append(&mdctx, (const unsigned char*)(buff), len);
md5_finish(&mdctx, md_value);
for(i=0; i<16; ++i)
{
h = md_value[i] & 0xf0;
h >>= 4;
l = md_value[i] & 0x0f;
md5sum[i * 2] = (char)((h >= 0x0 && h <= 0x9) ? (h + 0x30) : (h + 0x57));
md5sum[i * 2 + 1] = (char)((l >= 0x0 && l <= 0x9) ? (l + 0x30) : (l + 0x57));
}
md5sum[32] = '\0';
LOG_PRINT(LOG_DEBUG, "md5: %s", md5sum);
const char *etag_var = evhtp_header_find(request->headers_in, "If-None-Match");
LOG_PRINT(LOG_DEBUG, "If-None-Match: %s", etag_var);
if(etag_var == NULL)
{
evhtp_headers_add_header(request->headers_out, evhtp_header_new("Etag", md5sum, 0, 1));
}
else
{
if(strncmp(md5sum, etag_var, 32) == 0)
{
result = 2;
}
else
{
evhtp_headers_add_header(request->headers_out, evhtp_header_new("Etag", md5sum, 0, 1));
}
}
return result;
}
/**
* @brief conf_get_headers get headers from conf
*
* @param hdr_str zimg conf string
*
* @return zimg_headers_conf
*/
zimg_headers_conf_t * conf_get_headers(const char *hdr_str)
{
if(hdr_str == NULL)
return NULL;
zimg_headers_conf_t *hdrconf = (zimg_headers_conf_t *)malloc(sizeof(zimg_headers_conf_t));
if(hdrconf == NULL)
return NULL;
hdrconf->n = 0;
hdrconf->headers = NULL;
size_t hdr_len = strlen(hdr_str);
char *hdr = (char *)malloc(hdr_len);
if(hdr == NULL)
{
return NULL;
}
strncpy(hdr, hdr_str, hdr_len);
char *start = hdr, *end;
while(start <= hdr+hdr_len)
{
end = strchr(start, ';');
end = (end) ? end : hdr+hdr_len;
char *key = start;
char *value = strchr(key, ':');
size_t key_len = value - key;
if (value)
{
zimg_header_t *this_header = (zimg_header_t *)malloc(sizeof(zimg_header_t));
if (this_header == NULL) {
start = end + 1;
continue;
}
(void) memset(this_header, 0, sizeof(zimg_header_t));
size_t value_len;
value++;
value_len = end - value;
strncpy(this_header->key, key, key_len);
strncpy(this_header->value, value, value_len);
zimg_headers_t *headers = (zimg_headers_t *)malloc(sizeof(zimg_headers_t));
if (headers == NULL) {
start = end + 1;
continue;
}
headers->value = this_header;
headers->next = hdrconf->headers;
hdrconf->headers = headers;
hdrconf->n++;
}
start = end + 1;
}
free(hdr);
return hdrconf;
}
/**
* @brief zimg_headers_add add header to evhtp request from conf
*
* @param req the evhtp request
* @param hcf zimg_header_conf
*
* @return 1 for OK and -1 for fail
*/
static int zimg_headers_add(evhtp_request_t *req, zimg_headers_conf_t *hcf)
{
if(hcf == NULL) return -1;
zimg_headers_t *headers = hcf->headers;
LOG_PRINT(LOG_DEBUG, "headers: %d", hcf->n);
while(headers)
{
evhtp_headers_add_header(req->headers_out, evhtp_header_new(headers->value->key, headers->value->value, 1, 1));
headers = headers->next;
}
return 1;
}
/**
* @brief free_headers_conf release zimg_headers_conf
*
* @param hcf the hcf
*/
void free_headers_conf(zimg_headers_conf_t *hcf)
{
if(hcf == NULL)
return;
zimg_headers_t *headers = hcf->headers;
while(headers)
{
hcf->headers = headers->next;
free(headers->value);
free(headers);
headers = hcf->headers;
}
free(hcf);
}
/**
* @brief get_request_thr get the request's thread
*
* @param request the evhtp request
*
* @return the thread dealing with the request
*/
static evthr_t * get_request_thr(evhtp_request_t *request)
{
evhtp_connection_t * htpconn;
evthr_t * thread;
htpconn = evhtp_request_get_connection(request);
thread = htpconn->thread;
return thread;
}
/**
* @brief guess_type It returns a HTTP type by guessing the file type.
*
* @param type Input a file type.
*
* @return Const string of type.
*/
/*
static const char * guess_type(const char *type)
{
const struct table_entry *ent;
for (ent = &content_type_table[0]; ent->extension; ++ent) {
if (!evutil_ascii_strcasecmp(ent->extension, type))
return ent->content_type;
}
return "application/misc";
}
*/
/* Try to guess a good content-type for 'path' */
/**
* @brief guess_content_type Likes guess_type, but it process a whole path of file.
*
* @param path The path of a file you want to guess type.
*
* @return The string of type.
*/
/*
static const char * guess_content_type(const char *path)
{
const char *last_period, *extension;
const struct table_entry *ent;
last_period = strrchr(path, '.');
if (!last_period || strchr(last_period, '/'))
goto not_found;
extension = last_period + 1;
for (ent = &content_type_table[0]; ent->extension; ++ent) {
if (!evutil_ascii_strcasecmp(ent->extension, extension))
return ent->content_type;
}
not_found:
return "application/misc";
}
*/
/**
* @brief print_headers It displays all headers and values.
*
* @param header The header of a request.
* @param arg The evbuff you want to store the k-v string.
*
* @return It always return 1 for success.
*/
static int print_headers(evhtp_header_t * header, void * arg)
{
evbuf_t * buf = arg;
evbuffer_add(buf, header->key, header->klen);
evbuffer_add(buf, ": ", 2);
evbuffer_add(buf, header->val, header->vlen);
evbuffer_add(buf, "\r\n", 2);
return 1;
}
/**
* @brief add_info Added image info to the request
*
* @param im The image struct
* @param req The evhtp request
*/
void add_info(MagickWand *im, evhtp_request_t *req)
{
MagickSizeType size = MagickGetImageSize(im);
unsigned long width = MagickGetImageWidth(im);
unsigned long height = MagickGetImageHeight(im);
size_t quality = MagickGetImageCompressionQuality(im);
quality = (quality == 0 ? 100 : quality);
char *format = MagickGetImageFormat(im);
//{"ret":true,"info":{"size":195135,"width":720,"height":480,"quality":75,"format":"JPEG"}}
cJSON *j_ret = cJSON_CreateObject();
cJSON *j_ret_info = cJSON_CreateObject();
cJSON_AddBoolToObject(j_ret, "ret", 1);
cJSON_AddNumberToObject(j_ret_info, "size", size);
cJSON_AddNumberToObject(j_ret_info, "width", width);
cJSON_AddNumberToObject(j_ret_info, "height", height);
cJSON_AddNumberToObject(j_ret_info, "quality", quality);
cJSON_AddStringToObject(j_ret_info, "format", format);
cJSON_AddItemToObject(j_ret, "info", j_ret_info);
char *ret_str_unformat = cJSON_PrintUnformatted(j_ret);
LOG_PRINT(LOG_DEBUG, "ret_str_unformat: %s", ret_str_unformat);
evbuffer_add_printf(req->buffer_out, "%s", ret_str_unformat);
cJSON_Delete(j_ret);
free(ret_str_unformat);
free(format);
}
/**
* @brief dump_request_cb The callback of a dump request.
*
* @param req The request you want to dump.
* @param arg It is not useful.
*/
void dump_request_cb(evhtp_request_t *req, void *arg)
{
const char *uri = req->uri->path->full;
//switch (evhtp_request_t_get_command(req)) {
int req_method = evhtp_request_get_method(req);
if(req_method >= 16)
req_method = 16;
LOG_PRINT(LOG_DEBUG, "Received a %s request for %s", method_strmap[req_method], uri);
evbuffer_add_printf(req->buffer_out, "uri : %s\r\n", uri);
evbuffer_add_printf(req->buffer_out, "query : %s\r\n", req->uri->query_raw);
evhtp_headers_for_each(req->uri->query, print_headers, req->buffer_out);
evbuffer_add_printf(req->buffer_out, "Method : %s\n", method_strmap[req_method]);
evhtp_headers_for_each(req->headers_in, print_headers, req->buffer_out);
evbuf_t *buf = req->buffer_in;;
puts("Input data: <<<");
while (evbuffer_get_length(buf)) {
int n;
char cbuf[128];
n = evbuffer_remove(buf, cbuf, sizeof(buf)-1);
if (n > 0)
(void) fwrite(cbuf, 1, n, stdout);
}
puts(">>>");
evhtp_headers_add_header(req->headers_out, evhtp_header_new("Server", settings.server_name, 0, 1));
evhtp_headers_add_header(req->headers_out, evhtp_header_new("Content-Type", "text/plain", 0, 0));
evhtp_send_reply(req, EVHTP_RES_OK);
}
/**
* @brief echo_cb Callback function of echo test.
*
* @param req The request of a test url.
* @param arg It is not useful.
*/
void echo_cb(evhtp_request_t *req, void *arg)
{
evbuffer_add_printf(req->buffer_out, "<html><body><h1>zimg works!</h1></body></html>");
evhtp_headers_add_header(req->headers_out, evhtp_header_new("Server", settings.server_name, 0, 1));
evhtp_headers_add_header(req->headers_out, evhtp_header_new("Content-Type", "text/html", 0, 0));
evhtp_send_reply(req, EVHTP_RES_OK);
}
int on_header_field(multipart_parser* p, const char *at, size_t length)
{
char *header_name = (char *)malloc(length+1);
snprintf(header_name, length+1, "%s", at);
LOG_PRINT(LOG_DEBUG, "header_name %d %s: ", length, header_name);
free(header_name);
return 0;
}
int on_header_value(multipart_parser* p, const char *at, size_t length)
{
mp_arg_t *mp_arg = (mp_arg_t *)multipart_parser_get_data(p);
char *filename = strnstr(at, "filename=", length);
char *nameend = NULL;
if(filename)
{
filename += 9;
if(filename[0] == '\"')
{
filename++;
nameend = strnchr(filename, '\"', length-(filename-at));
if(!nameend)
mp_arg->check_name = -1;
else
{
nameend[0] = '\0';
char fileType[32];
LOG_PRINT(LOG_DEBUG, "File[%s]", filename);
if(get_type(filename, fileType) == -1)
{
LOG_PRINT(LOG_DEBUG, "Get Type of File[%s] Failed!", filename);
mp_arg->check_name = -1;
}
else
{
LOG_PRINT(LOG_DEBUG, "fileType[%s]", fileType);
if(is_img(fileType) != 1)
{
LOG_PRINT(LOG_DEBUG, "fileType[%s] is Not Supported!", fileType);
mp_arg->check_name = -1;
}
}
}
}
if(filename[0] != '\0' && mp_arg->check_name == -1)
{
LOG_PRINT(LOG_ERROR, "%s fail post type", mp_arg->address);
evbuffer_add_printf(mp_arg->req->buffer_out,
"<h1>File: %s</h1>\n"
"<p>File type is not supported!</p>\n",
filename
);
}
}
//multipart_parser_set_data(p, mp_arg);
char *header_value = (char *)malloc(length+1);
snprintf(header_value, length+1, "%s", at);
LOG_PRINT(LOG_DEBUG, "header_value %d %s", length, header_value);
free(header_value);
return 0;
}
int on_chunk_data(multipart_parser* p, const char *at, size_t length)
{
mp_arg_t *mp_arg = (mp_arg_t *)multipart_parser_get_data(p);
mp_arg->partno++;
if(mp_arg->check_name == -1)
{
mp_arg->check_name = 0;
return 0;
}
if(length < 1)
return 0;
//multipart_parser_set_data(p, mp_arg);
char md5sum[33];
if(save_img(mp_arg->thr_arg, at, length, md5sum) == -1)
{
LOG_PRINT(LOG_DEBUG, "Image Save Failed!");
LOG_PRINT(LOG_ERROR, "%s fail post save", mp_arg->address);
evbuffer_add_printf(mp_arg->req->buffer_out,
"<h1>Failed!</h1>\n"
"<p>File save failed!</p>\n"
);
}
else
{
mp_arg->succno++;
LOG_PRINT(LOG_INFO, "%s succ post pic:%s size:%d", mp_arg->address, md5sum, length);
evbuffer_add_printf(mp_arg->req->buffer_out,
"<h1>MD5: %s</h1>\n"
"Image upload successfully! You can get this image via this address:<br/><br/>\n"
"<a href=\"/%s\">http://yourhostname:%d/%s</a>?w=width&h=height&g=isgray&x=position_x&y=position_y&r=rotate&q=quality&f=format\n",
md5sum, md5sum, settings.port, md5sum
);
}
return 0;
}
int json_return(evhtp_request_t *req, int err_no, const char *md5sum, int post_size)
{
//json sample:
//{"ret":true,"info":{"size":"1024", "md5":"edac35fd4b0059d3218f0630bc56a6f4"}}
//{"ret":false,"error":{"code":"1","message":"\u9a8c\u8bc1\u5931\u8d25"}}
cJSON *j_ret = cJSON_CreateObject();
cJSON *j_ret_info = cJSON_CreateObject();
if(err_no == -1)
{
cJSON_AddBoolToObject(j_ret, "ret", 1);
cJSON_AddStringToObject(j_ret_info, "md5", md5sum);
cJSON_AddNumberToObject(j_ret_info, "size", post_size);
cJSON_AddItemToObject(j_ret, "info", j_ret_info);
}
else
{
cJSON_AddBoolToObject(j_ret, "ret", 0);
cJSON_AddNumberToObject(j_ret_info, "code", err_no);
LOG_PRINT(LOG_DEBUG, "post_error_list[%d]: %s", err_no, post_error_list[err_no]);
cJSON_AddStringToObject(j_ret_info, "message", post_error_list[err_no]);
cJSON_AddItemToObject(j_ret, "error", j_ret_info);
}
char *ret_str_unformat = cJSON_PrintUnformatted(j_ret);
LOG_PRINT(LOG_DEBUG, "ret_str_unformat: %s", ret_str_unformat);
evbuffer_add_printf(req->buffer_out, "%s", ret_str_unformat);
evhtp_headers_add_header(req->headers_out, evhtp_header_new("Content-Type", "application/json", 0, 0));
cJSON_Delete(j_ret);
free(ret_str_unformat);
return 0;
}
int binary_parse(evhtp_request_t *req, const char *content_type, const char *address, const char *buff, int post_size)
{
int err_no = 0;
if(is_img(content_type) != 1)
{
LOG_PRINT(LOG_DEBUG, "fileType[%s] is Not Supported!", content_type);
LOG_PRINT(LOG_ERROR, "%s fail post type", address);
err_no = 1;
goto done;
}
char md5sum[33];
LOG_PRINT(LOG_DEBUG, "Begin to Save Image...");
evthr_t *thread = get_request_thr(req);
thr_arg_t *thr_arg = (thr_arg_t *)evthr_get_aux(thread);
if(save_img(thr_arg, buff, post_size, md5sum) == -1)
{
LOG_PRINT(LOG_DEBUG, "Image Save Failed!");
LOG_PRINT(LOG_ERROR, "%s fail post save", address);
goto done;
}
err_no = -1;
LOG_PRINT(LOG_INFO, "%s succ post pic:%s size:%d", address, md5sum, post_size);
json_return(req, err_no, md5sum, post_size);
done:
return err_no;
}
int multipart_parse(evhtp_request_t *req, const char *content_type, const char *address, const char *buff, int post_size)
{
int err_no = 0;
char *boundary = NULL, *boundary_end = NULL;
char *boundaryPattern = NULL;
int boundary_len = 0;
mp_arg_t *mp_arg = NULL;
evbuffer_add_printf(req->buffer_out,
"<html>\n<head>\n"
"<title>Upload Result</title>\n"
"</head>\n"
"<body>\n"
);
if(strstr(content_type, "boundary") == 0)
{
LOG_PRINT(LOG_DEBUG, "boundary NOT found!");
LOG_PRINT(LOG_ERROR, "%s fail post parse", address);
err_no = 6;
goto done;
}
boundary = strchr(content_type, '=');
boundary++;
boundary_len = strlen(boundary);
if(boundary[0] == '"')
{
boundary++;
boundary_end = strchr(boundary, '"');
if (!boundary_end)
{
LOG_PRINT(LOG_DEBUG, "Invalid boundary in multipart/form-data POST data");
LOG_PRINT(LOG_ERROR, "%s fail post parse", address);
err_no = 6;
goto done;
}
}
else
{
/* search for the end of the boundary */
boundary_end = strpbrk(boundary, ",;");
}
if (boundary_end)
{
boundary_end[0] = '\0';
boundary_len = boundary_end-boundary;
}
LOG_PRINT(LOG_DEBUG, "boundary Find. boundary = %s", boundary);
boundaryPattern = (char *)malloc(boundary_len + 3);
if(boundaryPattern == NULL)
{
LOG_PRINT(LOG_DEBUG, "boundarypattern malloc failed!");
LOG_PRINT(LOG_ERROR, "%s fail malloc", address);
err_no = 0;
goto done;
}
snprintf(boundaryPattern, boundary_len + 3, "--%s", boundary);
LOG_PRINT(LOG_DEBUG, "boundaryPattern = %s, strlen = %d", boundaryPattern, (int)strlen(boundaryPattern));
multipart_parser* parser = multipart_parser_init(boundaryPattern);
if(!parser)
{
LOG_PRINT(LOG_DEBUG, "Multipart_parser Init Failed!");
LOG_PRINT(LOG_ERROR, "%s fail post save", address);
err_no = 0;
goto done;
}
mp_arg = (mp_arg_t *)malloc(sizeof(mp_arg_t));
if(!mp_arg)
{
LOG_PRINT(LOG_DEBUG, "Multipart_parser Arg Malloc Failed!");
LOG_PRINT(LOG_ERROR, "%s fail post save", address);
err_no = 0;
goto done;
}
evthr_t *thread = get_request_thr(req);
thr_arg_t *thr_arg = (thr_arg_t *)evthr_get_aux(thread);
mp_arg->req = req;
mp_arg->thr_arg = thr_arg;
str_lcpy(mp_arg->address, address, 16);
mp_arg->partno = 0;
mp_arg->succno = 0;
mp_arg->check_name = 0;
multipart_parser_set_data(parser, mp_arg);
multipart_parser_execute(parser, buff, post_size);
multipart_parser_free(parser);
if(mp_arg->succno == 0)
{
evbuffer_add_printf(req->buffer_out, "<h1>Upload Failed!</h1>\n");
}
evbuffer_add_printf(req->buffer_out, "</body>\n</html>\n");
evhtp_headers_add_header(req->headers_out, evhtp_header_new("Content-Type", "text/html", 0, 0));
err_no = -1;
done:
free(boundaryPattern);
free(mp_arg);
return err_no;
}
/**
* @brief post_request_cb The callback function of a POST request to upload a image.
*
* @param req The request with image buffer.
* @param arg It is not useful.
*/
void post_request_cb(evhtp_request_t *req, void *arg)
{
int post_size = 0;
char *buff = NULL;
int err_no = 0;
int ret_json = 1;
evhtp_connection_t *ev_conn = evhtp_request_get_connection(req);
struct sockaddr *saddr = ev_conn->saddr;
struct sockaddr_in *ss = (struct sockaddr_in *)saddr;
char address[16];
const char *xff_address = evhtp_header_find(req->headers_in, "X-Forwarded-For");
if(xff_address)
{
inet_aton(xff_address, &ss->sin_addr);
}
strncpy(address, inet_ntoa(ss->sin_addr), 16);
int req_method = evhtp_request_get_method(req);
if(req_method >= 16)
req_method = 16;
LOG_PRINT(LOG_DEBUG, "Method: %d", req_method);
if(strcmp(method_strmap[req_method], "POST") != 0)
{
LOG_PRINT(LOG_DEBUG, "Request Method Not Support.");
LOG_PRINT(LOG_INFO, "%s refuse post method", address);
err_no = 2;
goto err;
}
if(settings.up_access != NULL)
{
int acs = zimg_access_inet(settings.up_access, ss->sin_addr.s_addr);
LOG_PRINT(LOG_DEBUG, "access check: %d", acs);
if(acs == ZIMG_FORBIDDEN)
{
LOG_PRINT(LOG_DEBUG, "check access: ip[%s] forbidden!", address);
LOG_PRINT(LOG_INFO, "%s refuse post forbidden", address);
err_no = 3;
goto forbidden;
}
else if(acs == ZIMG_ERROR)
{
LOG_PRINT(LOG_DEBUG, "check access: check ip[%s] failed!", address);
LOG_PRINT(LOG_ERROR, "%s fail post access %s", address);
err_no = 0;
goto err;
}
}
const char *content_len = evhtp_header_find(req->headers_in, "Content-Length");
if(!content_len)
{
LOG_PRINT(LOG_DEBUG, "Get Content-Length error!");
LOG_PRINT(LOG_ERROR, "%s fail post content-length", address);
err_no = 5;
goto err;
}
post_size = atoi(content_len);
if(post_size <= 0)
{
LOG_PRINT(LOG_DEBUG, "Image Size is Zero!");
LOG_PRINT(LOG_ERROR, "%s fail post empty", address);
err_no = 5;
goto err;
}
if(post_size > settings.max_size)
{
LOG_PRINT(LOG_DEBUG, "Image Size Too Large!");
LOG_PRINT(LOG_ERROR, "%s fail post large", address);
err_no = 7;
goto err;
}
const char *content_type = evhtp_header_find(req->headers_in, "Content-Type");
if(!content_type)
{
LOG_PRINT(LOG_DEBUG, "Get Content-Type error!");
LOG_PRINT(LOG_ERROR, "%s fail post content-type", address);
err_no = 6;
goto err;
}
evbuf_t *buf;
buf = req->buffer_in;
buff = (char *)malloc(post_size);
if(buff == NULL)
{
LOG_PRINT(LOG_DEBUG, "buff malloc failed!");
LOG_PRINT(LOG_ERROR, "%s fail malloc buff", address);
err_no = 0;
goto err;
}
int rmblen, evblen;
if(evbuffer_get_length(buf) <= 0)
{
LOG_PRINT(LOG_DEBUG, "Empty Request!");
LOG_PRINT(LOG_ERROR, "%s fail post empty", address);
err_no = 4;
goto err;
}
while((evblen = evbuffer_get_length(buf)) > 0)
{
LOG_PRINT(LOG_DEBUG, "evblen = %d", evblen);
rmblen = evbuffer_remove(buf, buff, evblen);
LOG_PRINT(LOG_DEBUG, "rmblen = %d", rmblen);
if(rmblen < 0)
{
LOG_PRINT(LOG_DEBUG, "evbuffer_remove failed!");
LOG_PRINT(LOG_ERROR, "%s fail post parse", address);
err_no = 4;
goto err;
}
}
if(strstr(content_type, "multipart/form-data") == NULL)
{
err_no = binary_parse(req, content_type, address, buff, post_size);
}
else
{
ret_json = 0;
err_no = multipart_parse(req, content_type, address, buff, post_size);
}
if(err_no != -1)
{
goto err;
}
evhtp_headers_add_header(req->headers_out, evhtp_header_new("Server", settings.server_name, 0, 1));
evhtp_send_reply(req, EVHTP_RES_OK);
LOG_PRINT(LOG_DEBUG, "============post_request_cb() DONE!===============");
goto done;
forbidden:
json_return(req, err_no, NULL, 0);
evhtp_headers_add_header(req->headers_out, evhtp_header_new("Server", settings.server_name, 0, 1));
evhtp_send_reply(req, EVHTP_RES_OK);
LOG_PRINT(LOG_DEBUG, "============post_request_cb() FORBIDDEN!===============");
goto done;
err:
if(ret_json == 0)
{
evbuffer_add_printf(req->buffer_out, "<h1>Upload Failed!</h1></body></html>");
evhtp_headers_add_header(req->headers_out, evhtp_header_new("Content-Type", "text/html", 0, 0));
}
else
{
json_return(req, err_no, NULL, 0);
}
evhtp_headers_add_header(req->headers_out, evhtp_header_new("Server", settings.server_name, 0, 1));
evhtp_send_reply(req, EVHTP_RES_OK);
LOG_PRINT(LOG_DEBUG, "============post_request_cb() ERROR!===============");
done:
free(buff);
}
/**
* @brief get_request_cb The callback function of get a image request.
*
* @param req The request with a list of params and the md5 of image.
* @param arg It is not useful.
*/
void get_request_cb(evhtp_request_t *req, void *arg)
{
char *md5 = NULL, *fmt = NULL, *type = NULL;
zimg_req_t *zimg_req = NULL;
char *buff = NULL;
size_t len;
evhtp_connection_t *ev_conn = evhtp_request_get_connection(req);
struct sockaddr *saddr = ev_conn->saddr;
struct sockaddr_in *ss = (struct sockaddr_in *)saddr;
char address[16];
const char *xff_address = evhtp_header_find(req->headers_in, "X-Forwarded-For");
if(xff_address)
{
inet_aton(xff_address, &ss->sin_addr);
}
strncpy(address, inet_ntoa(ss->sin_addr), 16);
int req_method = evhtp_request_get_method(req);
if(req_method >= 16)
req_method = 16;
LOG_PRINT(LOG_DEBUG, "Method: %d", req_method);
if(strcmp(method_strmap[req_method], "POST") == 0)
{
LOG_PRINT(LOG_DEBUG, "POST Request.");
post_request_cb(req, NULL);
return;
}
else if(strcmp(method_strmap[req_method], "GET") != 0)
{
LOG_PRINT(LOG_DEBUG, "Request Method Not Support.");
LOG_PRINT(LOG_INFO, "%s refuse method", address);
goto err;
}
if(settings.down_access != NULL)
{
int acs = zimg_access_inet(settings.down_access, ss->sin_addr.s_addr);
LOG_PRINT(LOG_DEBUG, "access check: %d", acs);
if(acs == ZIMG_FORBIDDEN)
{
LOG_PRINT(LOG_DEBUG, "check access: ip[%s] forbidden!", address);
LOG_PRINT(LOG_INFO, "%s refuse get forbidden", address);
goto forbidden;
}
else if(acs == ZIMG_ERROR)
{
LOG_PRINT(LOG_DEBUG, "check access: check ip[%s] failed!", address);
LOG_PRINT(LOG_ERROR, "%s fail get access", address);
goto err;
}
}
const char *uri;
uri = req->uri->path->full;
if(strlen(uri) == 1 && uri[0] == '/')
{
LOG_PRINT(LOG_DEBUG, "Root Request.");
int fd = -1;
struct stat st;
if((fd = open(settings.root_path, O_RDONLY)) == -1)
{
LOG_PRINT(LOG_DEBUG, "Root_page Open Failed. Return Default Page.");
evbuffer_add_printf(req->buffer_out, "<html>\n<body>\n<h1>\nWelcome To zimg World!</h1>\n</body>\n</html>\n");
}
else
{
if (fstat(fd, &st) < 0)
{
/* Make sure the length still matches, now that we
* opened the file :/ */
LOG_PRINT(LOG_DEBUG, "Root_page Length fstat Failed. Return Default Page.");
evbuffer_add_printf(req->buffer_out, "<html>\n<body>\n<h1>\nWelcome To zimg World!</h1>\n</body>\n</html>\n");
}
else
{
evbuffer_add_file(req->buffer_out, fd, 0, st.st_size);
}
}
//evbuffer_add_printf(req->buffer_out, "<html>\n </html>\n");
evhtp_headers_add_header(req->headers_out, evhtp_header_new("Server", settings.server_name, 0, 1));
evhtp_headers_add_header(req->headers_out, evhtp_header_new("Content-Type", "text/html", 0, 0));
evhtp_send_reply(req, EVHTP_RES_OK);
LOG_PRINT(LOG_DEBUG, "============get_request_cb() DONE!===============");
LOG_PRINT(LOG_INFO, "%s succ root page", address);
goto done;
}
if(strstr(uri, "favicon.ico"))
{
LOG_PRINT(LOG_DEBUG, "favicon.ico Request, Denied.");
evhtp_headers_add_header(req->headers_out, evhtp_header_new("Server", settings.server_name, 0, 1));
evhtp_headers_add_header(req->headers_out, evhtp_header_new("Content-Type", "text/html", 0, 0));
zimg_headers_add(req, settings.headers);
evhtp_send_reply(req, EVHTP_RES_OK);
goto done;
}
LOG_PRINT(LOG_DEBUG, "Got a GET request for <%s>", uri);
/* Don't allow any ".."s in the path, to avoid exposing stuff outside
* of the docroot. This test is both overzealous and underzealous:
* it forbids aceptable paths like "/this/one..here", but it doesn't
* do anything to prevent symlink following." */
if (strstr(uri, ".."))
{
LOG_PRINT(LOG_DEBUG, "attempt to upper dir!");
LOG_PRINT(LOG_INFO, "%s refuse directory", address);
goto forbidden;
}
size_t md5_len = strlen(uri) + 1;
md5 = (char *)malloc(md5_len);
if(md5 == NULL)
{
LOG_PRINT(LOG_DEBUG, "md5 malloc failed!");
LOG_PRINT(LOG_ERROR, "%s fail malloc", address);
goto err;
}
if(uri[0] == '/')
str_lcpy(md5, uri+1, md5_len);
else
str_lcpy(md5, uri, md5_len);
LOG_PRINT(LOG_DEBUG, "md5 of request is <%s>", md5);
if(is_md5(md5) == -1)
{
LOG_PRINT(LOG_DEBUG, "Url is Not a zimg Request.");
LOG_PRINT(LOG_INFO, "%s refuse url illegal", address);
goto err;
}
/* This holds the content we're sending. */
evthr_t *thread = get_request_thr(req);
thr_arg_t *thr_arg = (thr_arg_t *)evthr_get_aux(thread);
int width, height, proportion, gray, x, y, rotate, quality, sv;
width = 0;
height = 0;
proportion = 1;
gray = 0;
x = -1;
y = -1;
rotate = 0;
quality = 0;
sv = 0;
evhtp_kvs_t *params;
params = req->uri->query;
if(params != NULL)
{
if(settings.disable_args != 1)
{