aboutsummaryrefslogtreecommitdiff
path: root/release/picobsd/tinyware/simple_httpd/simple_httpd.c
blob: 0a83f673781575c9c08acf98e0b2098045066e78 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
/*	simpleHTTPd (C) 1998 netSTOR Technologies, Inc. ("netSTOR")
	FreeBSD port and additional work by Marc Nicholas <marc@netstor.com>
	Based on work by:-
	Thierry Leconte & Yury Shimanovsky
	My Russian webserver writing friends :-)

	This is an HTTP daemon that will serve up HTML, text files, JPEGs,
	GIFs and do simple CGI work.

	You may use this code for non-commercial distribution only. Commercial
	distribution requires the express, written permission of netSTOR. No
	warranty is implied or given -- use at your own risk!
*/

/*
 * $Id: simple_httpd.c,v 1.1 1998/08/19 16:24:06 abial Exp $
 */

#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/types.h>
#include <time.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <fcntl.h>
#include <string.h>
#include <signal.h>
#include <sys/wait.h>

int             http_sock, con_sock;
int             http_port = 80;
struct sockaddr_in source;
char           homedir[100];
char           *adate();
struct hostent *hst;

void
init_servconnection(void)
{
	struct sockaddr_in server;

	/* Create a socket */
	http_sock = socket(AF_INET, SOCK_STREAM, 0);
	if (http_sock < 0) {
		perror("socket");
		exit(1);
	}
	server.sin_family = AF_INET;
	server.sin_port = htons(http_port);
	server.sin_addr.s_addr = INADDR_ANY;
	if (bind(http_sock, (struct sockaddr *) & server, sizeof(server)) < 0) {
		perror("bind socket");
		exit(1);
	}
        printf("simpleHTTPd running on %d port\n",http_port);
}

attenteconnection(void)
{
	int lg;

	lg = sizeof(struct sockaddr_in);

	con_sock = accept(http_sock, (struct sockaddr *) & source, &lg);
	if (con_sock <= 0) {
		perror("accept");
		exit(1);
	}
}

outdate()
{
	time_t	tl;
	char	buff[50];

	tl = time(NULL);
	strftime(buff, 50, "Date: %a, %d %h %Y %H:%M:%S %Z\r\n", gmtime(&tl));
	write(con_sock, buff, strlen(buff));
}

char           *rep_err_nget[2] = {"<HTML><HEAD><TITLE>Error</TITLE></HEAD><BODY><H1>Error 405</H1>\
This server is supports only GET and HEAD  requests\n</BODY></HTML>\r\n",
"HTTP/1.0 405 Method Not allowed\r\nAllow: GET,HEAD\r\nServer: jhttpd\r\n"};

char           *rep_err_acc[2] = {"<HTML><HEAD><TITLE>Error</TITLE></HEAD><BODY><H1>Error 404</H1>\
Not found - file doesn't exist or is read protected\n</BODY></HTML>\r\n",
"HTTP/1.0 404 Not found\r\nServer: jhttpd\r\n"};

outerror(char **rep, int http1) /*     html-  */
{

	if (http1) {
		write(con_sock, rep[1], strlen(rep[1]));
		outdate();
		write(con_sock, "\r\n", 2);
	}
	write(con_sock, rep[0], strlen(rep[0]));
}

char            rep_head[] = "HTTP/1.0 200 OK\r\nServer: simpleHTTPD\r\n";

traite_req()
{
	char            buff[8192];
	int             fd, lg, cmd, http1, i;
	char           *filename, *c;
	struct stat     statres;
	char            req[1024];
        char            logfile[80];
        char            msg[1024];
        char           *p,
                       *par;
        long            addr;
        FILE           *log;

	lg = read(con_sock, req, 1024);

        if (p=strstr(req,"\n")) *p=0;
        if (p=strstr(req,"\r")) *p=0;

       if (geteuid())
          {
          strcpy(logfile,getenv("HOME"));
          strcat(logfile,"/");
          strcat(logfile,"jhttp.log");
          }
       else strcpy(logfile,"/usr/adm/jhttpd.log");

       if ( access(logfile,W_OK))
            { 
            lg=creat (logfile,O_WRONLY);         
            chmod (logfile,00600);
            close(lg);
            }

        strcpy(buff,inet_ntoa(source.sin_addr));

        addr=inet_addr(buff);
        
        strcpy(msg,adate());
        strcat(msg,"    ");                 
        hst=gethostbyaddr((char*) &addr, 4, AF_INET);
        if (hst) strcat(msg,hst->h_name);
        strcat(msg," (");
        strcat(msg,buff);
        strcat(msg,")   ");
        strcat(msg,req);

        log=fopen(logfile,"a");
        fprintf(log,"%s\n",msg);
        fclose(log);

	c = strtok(req, " ");
	if (c == NULL) {
		outerror(rep_err_nget, 0);
		goto error;
	}
	cmd = 0;
	if (strncmp(c, "GET", 3) == 0)
		cmd = 1;
	if (strncmp(c, "HEAD", 4) == 0) {
		cmd = 2;
	}

	filename = strtok(NULL, " ");

	http1 = 0;
	c = strtok(NULL, " ");
	if (c != NULL && strncmp(c, "HTTP", 4) == 0)
		http1 = 1;

	if (cmd == 0) {
		outerror(rep_err_nget, http1);
		goto error;
	}
   
	if (filename == NULL || 
            strlen(filename)==1) filename="/index.html"; 

         while (filename[0]== '/') filename++;        

        /**/
        if (!strncmp(filename,"cgi-bin/",8))           
           {
           par=0;
           if (par=strstr(filename,"?"))                        
              {
               *par=0;            
                par++;      
              } 
           if (access(filename,X_OK)) goto conti;
           stat (filename,&statres);
           if (setuid(statres.st_uid)) return(0);
           if (seteuid(statres.st_uid)) return(0);
           if (!fork())
              {
               close(1);
               dup(con_sock);
               printf("HTTP/1.0 200 OK\nContent-type: text/html\n\n\n");
               execlp (filename,filename,par,0);
              } 
            wait(&i);
            return(0);
            }
        conti:
	if (filename == NULL) {
		outerror(rep_err_acc, http1);
		goto error;
	}
	/* interdit les .. dans le path */
	c = filename;
	while (*c != '\0')
		if (c[0] == '.' && c[1] == '.') {
			outerror(rep_err_acc, http1);
			goto error;
		} else
			c++;

	fd = open(filename, O_RDONLY);
	if (fd < 0) {
		outerror(rep_err_acc, http1);
		goto error;
	}
	if (fstat(fd, &statres) < 0) {
		outerror(rep_err_acc, http1);
		goto error;
	}
	if (!S_ISREG(statres.st_mode))
	    {
	    outerror(rep_err_acc, http1);
            goto error;
	    }
	if (http1) {
		char            buff[50];
		time_t          tl;
     
		write(con_sock, rep_head, strlen(rep_head));
		sprintf(buff, "Content-length: %d\r\n", statres.st_size);
		write(con_sock, buff, strlen(buff));
		outdate();

                if (strstr(filename,"."))
                   {
                   strcpy(buff,"Content-type: ");
                   strcat(buff,strstr(filename,".")+1);
                   strcat(buff,"\r\n");
                   write(con_sock,buff,strlen(buff));
                   }

                if (strstr(filename,".txt"))
                   {
                   strcpy(buff,"Content-type: text/plain\r\n");
                   write(con_sock, buff, strlen(buff));
                   }

                if (strstr(filename,".html") ||
                    strstr(filename,".htm"))
                   {
                   strcpy(buff,"Content-type: text/html\r\n");
                   write(con_sock, buff, strlen(buff));
                   }

                if (strstr(filename,".gif"))
                   {
                   strcpy(buff,"Content-type: image/gif\r\n");
                   write(con_sock, buff, strlen(buff));
                   }

                if (strstr(filename,".jpg"))
                   {
                   strcpy(buff,"Content-type: image/jpeg\r\n");
                   write(con_sock, buff, strlen(buff));
                   } 

		strftime(buff, 50, "Last-Modified: %a, %d %h %Y %H:%M:%S %Z\r\n\r\n", gmtime(&statres.st_mtime));
		write(con_sock, buff, strlen(buff));
	}
	if (cmd == 1) {
		while (lg = read(fd, buff, 8192))
			write(con_sock, buff, lg);
	} 

error:
	close(fd);
	close(con_sock);

}


main(int argc, char **argv)
{
	int             lg;
        char            hello[100];

        if (argc<2 && geteuid())
           {
           printf("Usage: simple_htppd <port>\n");
           exit(1);
           }

	if (argc>=2) http_port = atoi(argv[1]);
 
	strcpy (homedir,getenv("HOME"));
        if (!geteuid()) strcpy (homedir,"/httphome");
           else         strcat (homedir,"/httphome");

        strcpy(hello,homedir);
        strcat(hello,"/0hello.html");

	if (chdir(homedir)) 
           {
	   perror("chdir");
           puts(homedir);
           exit(1);
	   }
        init_servconnection();                  
                
        if (fork()) exit(0);

        setpgrp(0,65534);
	signal(SIGQUIT, SIG_IGN);
	signal(SIGHUP, SIG_IGN);

        if (listen(http_sock,100) < 0) exit(1);

        label:	
	attenteconnection();
        if (fork())
           {
           close(con_sock);
           goto label;
           }
        alarm(1800);
	traite_req();
        exit(0);
}



char *adate()
{
        static char out[50];
        long now;
        struct tm *t;
        time(&now);
        t = localtime(&now);
        sprintf(out, "%02d:%02d:%02d %02d/%02d/%02d",
                     t->tm_hour, t->tm_min, t->tm_sec,
                     t->tm_mday, t->tm_mon+1, t->tm_year );
        return out;
}