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lxsang 2020-01-02 11:56:05 +01:00
parent 085127338f
commit 2760f6e18b
2 changed files with 64 additions and 67 deletions
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131
cgi.c
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@ -3,10 +3,16 @@
#include <antd/plugin.h> #include <antd/plugin.h>
#include "antd/ini.h" #include "antd/ini.h"
#define MAX_ENV_SIZE 512 #define MAX_ENV_SIZE 100
dictionary_t cgi_bin = NULL; dictionary_t cgi_bin = NULL;
typedef struct {
int size;
char* env[MAX_ENV_SIZE];
} envar_arr_t;
static int ini_handle(void *user_data, const char *section, const char *name, static int ini_handle(void *user_data, const char *section, const char *name,
const char *value) const char *value)
{ {
@ -47,12 +53,16 @@ void destroy()
freedict(cgi_bin); freedict(cgi_bin);
} }
static void add_vars(list_t *l, char *k, char *v) static void add_vars(envar_arr_t *l, char *k, char *v)
{ {
if (!v || !l || !k) if (!v || !l || !k)
return; return;
if(l->size >= MAX_ENV_SIZE-1)
return;
char *data = __s("%s=%s", k, v); char *data = __s("%s=%s", k, v);
list_put_ptr(l, data); l->env[l->size] = data;
l->size++;
//list_put_ptr(l, data);
} }
static void write_request_body(antd_request_t *rq, int fd) static void write_request_body(antd_request_t *rq, int fd)
@ -95,44 +105,43 @@ static char *get_cgi_bin(antd_request_t *rq)
free(tmp); free(tmp);
return bin; return bin;
} }
static list_t get_env_vars(antd_request_t *rq) static void get_env_vars(antd_request_t *rq, envar_arr_t* env_vars)
{ {
char *tmp = NULL; char *tmp = NULL;
char *sub = NULL; char *sub = NULL;
dictionary_t request = (dictionary_t)rq->request; dictionary_t request = (dictionary_t)rq->request;
dictionary_t header = (dictionary_t)dvalue(rq->request, "REQUEST_HEADER"); dictionary_t header = (dictionary_t)dvalue(rq->request, "REQUEST_HEADER");
list_t env_vars = list_init(); add_vars(env_vars, "GATEWAY_INTERFACE", "CGI/1.1");
add_vars(&env_vars, "GATEWAY_INTERFACE", "CGI/1.1"); add_vars(env_vars, "SERVER_SOFTWARE", SERVER_NAME);
add_vars(&env_vars, "SERVER_SOFTWARE", SERVER_NAME);
tmp = (char *)dvalue(request, "REQUEST_QUERY"); tmp = (char *)dvalue(request, "REQUEST_QUERY");
if (!tmp) if (!tmp)
add_vars(&env_vars, "QUERY_STRING", ""); add_vars(env_vars, "QUERY_STRING", "");
else else
{ {
add_vars(&env_vars, "REQUEST_URI", tmp); add_vars(env_vars, "REQUEST_URI", tmp);
sub = strchr(tmp, '?'); sub = strchr(tmp, '?');
if (sub) if (sub)
{ {
sub++; sub++;
add_vars(&env_vars, "QUERY_STRING", sub); add_vars(env_vars, "QUERY_STRING", sub);
} }
else else
add_vars(&env_vars, "QUERY_STRING", ""); add_vars(env_vars, "QUERY_STRING", "");
} }
tmp = (char *)dvalue(request, "METHOD"); tmp = (char *)dvalue(request, "METHOD");
if (tmp) if (tmp)
add_vars(&env_vars, "REQUEST_METHOD", tmp); add_vars(env_vars, "REQUEST_METHOD", tmp);
tmp = (char *)dvalue(header, "Content-Type"); tmp = (char *)dvalue(header, "Content-Type");
if (tmp) if (tmp)
add_vars(&env_vars, "CONTENT_TYPE", tmp); add_vars(env_vars, "CONTENT_TYPE", tmp);
else else
add_vars(&env_vars, "CONTENT_TYPE", ""); add_vars(env_vars, "CONTENT_TYPE", "");
tmp = (char *)dvalue(header, "Content-Length"); tmp = (char *)dvalue(header, "Content-Length");
if (tmp) if (tmp)
add_vars(&env_vars, "CONTENT_LENGTH", tmp); add_vars(env_vars, "CONTENT_LENGTH", tmp);
else else
add_vars(&env_vars, "CONTENT_LENGTH", ""); add_vars(env_vars, "CONTENT_LENGTH", "");
add_vars(&env_vars, "DOCUMENT_ROOT", rq->client->port_config->htdocs); add_vars(env_vars, "DOCUMENT_ROOT", rq->client->port_config->htdocs);
tmp = (char *)dvalue(request, "REQUEST_PATH"); tmp = (char *)dvalue(request, "REQUEST_PATH");
if (tmp) if (tmp)
{ {
@ -140,21 +149,21 @@ static list_t get_env_vars(antd_request_t *rq)
while(*sub == '/') sub++; while(*sub == '/') sub++;
if(sub) if(sub)
{ {
add_vars(&env_vars, "PATH_INFO", sub); add_vars(env_vars, "PATH_INFO", sub);
} }
else else
{ {
add_vars(&env_vars, "PATH_INFO", ""); add_vars(env_vars, "PATH_INFO", "");
} }
} }
else else
add_vars(&env_vars, "PATH_INFO", ""); add_vars(env_vars, "PATH_INFO", "");
tmp = (char *)dvalue(header, "REMOTE_ADDR"); tmp = (char *)dvalue(header, "REMOTE_ADDR");
add_vars(&env_vars, "REMOTE_ADDR", tmp); add_vars(env_vars, "REMOTE_ADDR", tmp);
add_vars(&env_vars, "REMOTE_HOST", tmp); add_vars(env_vars, "REMOTE_HOST", tmp);
add_vars(&env_vars, "SERVER_NAME", SERVER_NAME); add_vars(env_vars, "SERVER_NAME", SERVER_NAME);
add_vars(&env_vars, "SERVER_PORT", (char *)dvalue(header, "SERVER_PORT")); add_vars(env_vars, "SERVER_PORT", (char *)dvalue(header, "SERVER_PORT"));
add_vars(&env_vars, "SERVER_PROTOCOL", "HTTP/1.1"); add_vars(env_vars, "SERVER_PROTOCOL", "HTTP/1.1");
// add remaining header to the vars // add remaining header to the vars
chain_t it; chain_t it;
for_each_assoc(it, header) for_each_assoc(it, header)
@ -169,27 +178,26 @@ static list_t get_env_vars(antd_request_t *rq)
*s = toupper((char)*s); *s = toupper((char)*s);
s++; s++;
} }
add_vars(&env_vars, tmp, (char *)it->value); add_vars(env_vars, tmp, (char *)it->value);
free(tmp); free(tmp);
} }
tmp = (char *)dvalue(request, "RESOURCE_PATH"); tmp = (char *)dvalue(request, "RESOURCE_PATH");
if (tmp) if (tmp)
{ {
add_vars(&env_vars, "SCRIPT_NAME", tmp); add_vars(env_vars, "SCRIPT_NAME", tmp);
tmp = __s("%s/%s", rq->client->port_config->htdocs, tmp); tmp = __s("%s/%s", rq->client->port_config->htdocs, tmp);
add_vars(&env_vars, "SCRIPT_FILENAME", tmp); add_vars(env_vars, "SCRIPT_FILENAME", tmp);
add_vars(&env_vars, "PATH_TRANSLATED", tmp); add_vars(env_vars, "PATH_TRANSLATED", tmp);
free(tmp); free(tmp);
} }
else else
{ {
add_vars(&env_vars, "SCRIPT_FILENAME", ""); add_vars(env_vars, "SCRIPT_FILENAME", "");
add_vars(&env_vars, "PATH_TRANSLATED", ""); add_vars(env_vars, "PATH_TRANSLATED", "");
add_vars(&env_vars, "SCRIPT_NAME", ""); add_vars(env_vars, "SCRIPT_NAME", "");
} }
// redirect status for php // redirect status for php
add_vars(&env_vars, "REDIRECT_STATUS", "200"); add_vars(env_vars, "REDIRECT_STATUS", "200");
return env_vars;
} }
@ -226,34 +234,16 @@ void *handle(void *data)
pid_t pid = 0; pid_t pid = 0;
int inpipefd[2]; int inpipefd[2];
int outpipefd[2]; int outpipefd[2];
char buf[BUFFLEN];
int status;
antd_task_t *task = NULL;
list_t env_vars = NULL;
char *bin = get_cgi_bin(rq); char *bin = get_cgi_bin(rq);
antd_task_t *task = NULL;
if (!bin) if (!bin)
{ {
LOG("No cgi bin found\n"); LOG("No cgi bin found");
antd_error(cl,503, "Service unavailable"); antd_error(cl,503, "Service unavailable");
task = antd_create_task(NULL, data, NULL,rq->client->last_io); task = antd_create_task(NULL, data, NULL,rq->client->last_io);
task->priority++; task->priority++;
return task; return task;
} }
env_vars = get_env_vars(rq);
// now exec the cgi bin
LOG("Execute the cgi bin\n");
item_t np = env_vars;
char* envs[MAX_ENV_SIZE];
int i = 0;
while (np)
{
envs[i] = (char*)np->value.ptr;
np = np->next;
i++;
if(i == MAX_ENV_SIZE - 1)
break;
}
envs[i] = NULL;
// PIPE // PIPE
UNUSED(pipe(inpipefd)); UNUSED(pipe(inpipefd));
UNUSED(pipe(outpipefd)); UNUSED(pipe(outpipefd));
@ -263,33 +253,42 @@ void *handle(void *data)
// Child // Child
dup2(outpipefd[0], STDIN_FILENO); dup2(outpipefd[0], STDIN_FILENO);
dup2(inpipefd[1], STDOUT_FILENO); dup2(inpipefd[1], STDOUT_FILENO);
dup2(inpipefd[1], STDERR_FILENO); // we dont wan't error message on stderr on the returned result
//dup2(inpipefd[1], STDERR_FILENO);
// now exec the cgi bin
LOG("Execute the cgi bin");
envar_arr_t envs;
envs.size = 0;
for(int i = 0; i < MAX_ENV_SIZE; i++)
{
envs.env[i] = NULL;
}
get_env_vars(rq, &envs);
//ask kernel to deliver SIGTERM in case the parent dies //ask kernel to deliver SIGTERM in case the parent dies
//prctl(PR_SET_PDEATHSIG, SIGTERM); //prctl(PR_SET_PDEATHSIG, SIGTERM);
char *argv[] = {bin, 0}; char *argv[] = {bin, 0};
execve(argv[0], &argv[0], envs); execve(argv[0], &argv[0], envs.env);
// Nothing below this line should be executed by child process. If so, // Nothing below this line should be executed by child process. If so,
// it means that the execl function wasn't successfull, so lets exit: // it means that the execl function wasn't successfull, so lets exit:
_exit(1); _exit(1);
} }
// The code below will be executed only by parent. // The code below will be executed only by parent.
char buf[BUFFLEN];
int status;
//close unused pipe ends //close unused pipe ends
close(outpipefd[0]); close(outpipefd[0]);
close(inpipefd[1]); close(inpipefd[1]);
// Now, we can write to outpipefd[1] and read from inpipefd[0] : // Now, we can write to outpipefd[1] and read from inpipefd[0] :
write_request_body(rq, outpipefd[1]); write_request_body(rq, outpipefd[1]);
const char* stat_str = get_status_str(200);
//set_status(cl, 200, "OK");
//wpid = 0;
//waitpid(pid, &status, 0); // wait for the child finish
// WNOHANG
int beg = 1; int beg = 1;
regmatch_t matches[2]; regmatch_t matches[2];
char statusbuf[100]; char statusbuf[256];
char* sub = NULL; char* sub = NULL;
memset(statusbuf, '\0', sizeof(statusbuf)); memset(statusbuf, '\0', sizeof(statusbuf));
while ( waitpid(pid, &status, WNOHANG) == 0) while ( waitpid(pid, &status, WNOHANG) == 0)
@ -327,7 +326,6 @@ void *handle(void *data)
{ {
if(!regex_match("^[a-zA-Z0-9\\-]+\\s*:\\s*.*$",buf,0,NULL)) if(!regex_match("^[a-zA-Z0-9\\-]+\\s*:\\s*.*$",buf,0,NULL))
{ {
LOG("<CGI invalid header> %s", buf);
continue; continue;
} }
if(regex_match("\\s*Status\\s*:\\s+([0-9]{3}\\s+[a-zA-Z0-9 ]*)",buf,2,matches)) if(regex_match("\\s*Status\\s*:\\s+([0-9]{3}\\s+[a-zA-Z0-9 ]*)",buf,2,matches))
@ -339,6 +337,7 @@ void *handle(void *data)
} }
else else
{ {
const char* stat_str = get_status_str(200);
__t(cl, "HTTP/1.1 %d %s", 200, stat_str); __t(cl, "HTTP/1.1 %d %s", 200, stat_str);
} }
beg = 0; beg = 0;
@ -348,8 +347,6 @@ void *handle(void *data)
} }
//kill(pid, SIGKILL); //kill(pid, SIGKILL);
//waitpid(pid, &status, 0); //waitpid(pid, &status, 0);
//printf("End cgi\n");
list_free(&env_vars);
task = antd_create_task(NULL, data, NULL,rq->client->last_io); task = antd_create_task(NULL, data, NULL,rq->client->last_io);
task->priority++; task->priority++;
return task; return task;

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dist/cgi-1.0.0b.tar.gz vendored
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