629 lines
12 KiB
C
Executable file
629 lines
12 KiB
C
Executable file
/* urlget.c Copyright 2000 by Michael Temari All Rights Reserved */
|
|
/* 04/05/2000 Michael Temari <Michael@TemWare.Com> */
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/wait.h>
|
|
#include <stdio.h>
|
|
#include <ctype.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <signal.h>
|
|
#include <unistd.h>
|
|
#include <time.h>
|
|
|
|
#include "net.h"
|
|
|
|
_PROTOTYPE(char *unesc, (char *s));
|
|
_PROTOTYPE(void encode64, (char **pp, char *s));
|
|
_PROTOTYPE(char *auth, (char *user, char *pass));
|
|
_PROTOTYPE(int skipit, (char *buf, int len, int *skip));
|
|
_PROTOTYPE(int httpget, (char *host, int port, char *user, char *pass, char *path, int headers, int discard, int post));
|
|
_PROTOTYPE(void ftppasv, (char *reply));
|
|
_PROTOTYPE(int ftpreply, (FILE *fpr));
|
|
_PROTOTYPE(int ftpcmd, (FILE *fpw, FILE *fpr, char *cmd, char *arg));
|
|
_PROTOTYPE(int ftpget, (char *host, int port, char *user, char *pass, char *path, int type));
|
|
_PROTOTYPE(int tcpget, (char *host, int port, char *user, char *pass, char *path));
|
|
_PROTOTYPE(int main, (int argc, char *argv[]));
|
|
|
|
char ftpphost[15+1];
|
|
unsigned int ftppport;
|
|
|
|
#define SCHEME_HTTP 1
|
|
#define SCHEME_FTP 2
|
|
#define SCHEME_TCP 3
|
|
#define SCHEME_NNTP 4
|
|
|
|
char buffer[16000];
|
|
|
|
#if 0
|
|
_PROTOTYPE(int strncasecmp, (const char *s1, const char *s2, size_t len));
|
|
int
|
|
strncasecmp(s1, s2, len)
|
|
const char *s1, *s2;
|
|
size_t len;
|
|
{
|
|
int c1, c2;
|
|
do {
|
|
if (len == 0)
|
|
return 0;
|
|
len--;
|
|
} while (c1= toupper(*s1++), c2= toupper(*s2++), c1 == c2 && (c1 & c2))
|
|
;
|
|
if (c1 & c2)
|
|
return c1 < c2 ? -1 : 1;
|
|
return c1 ? 1 : (c2 ? -1 : 0);
|
|
}
|
|
#endif
|
|
|
|
char *unesc(s)
|
|
char *s;
|
|
{
|
|
char *p;
|
|
char *p2;
|
|
unsigned char c;
|
|
|
|
p = s;
|
|
p2 = s;
|
|
while(*p) {
|
|
if(*p != '%') {
|
|
*p2++ = *p++;
|
|
continue;
|
|
}
|
|
p++;
|
|
if(*p == '%') {
|
|
*p2++ = *p++;
|
|
continue;
|
|
}
|
|
if(*p >= '0' && *p <= '9') c = *p++ - '0'; else
|
|
if(*p >= 'a' && *p <= 'f') c = *p++ - 'a' + 10; else
|
|
if(*p >= 'A' && *p <= 'F') c = *p++ - 'A' + 10; else
|
|
break;
|
|
if(*p >= '0' && *p <= '9') c = c << 4 | (*p++ - '0'); else
|
|
if(*p >= 'a' && *p <= 'f') c = c << 4 | (*p++ - 'a') + 10; else
|
|
if(*p >= 'A' && *p <= 'F') c = c << 4 | (*p++ - 'A') + 10; else
|
|
break;
|
|
*p2++ = c;
|
|
}
|
|
*p2 = '\0';
|
|
return(s);
|
|
}
|
|
|
|
void encode64(pp, s)
|
|
char **pp;
|
|
char *s;
|
|
{
|
|
char *p;
|
|
char c[3];
|
|
int i;
|
|
int len;
|
|
static char e64[64] = {
|
|
'A','B','C','D','E','F','G','H','I','J','K','L','M',
|
|
'N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
|
|
'a','b','c','d','e','f','g','h','i','j','k','l','m',
|
|
'n','o','p','q','r','s','t','u','v','w','x','y','z',
|
|
'0','1','2','3','4','5','6','7','8','9','+','/' };
|
|
|
|
p = *pp;
|
|
len = strlen(s);
|
|
for(i=0; i < len; i += 3) {
|
|
c[0] = *s++;
|
|
c[1] = *s++;
|
|
c[2] = *s++;
|
|
*p++ = e64[ c[0] >> 2];
|
|
*p++ = e64[((c[0] << 4) & 0x30) | ((c[1] >> 4) & 0x0f)];
|
|
*p++ = e64[((c[1] << 2) & 0x3c) | ((c[2] >> 6) & 0x03)];
|
|
*p++ = e64[ c[2] & 0x3f];
|
|
}
|
|
if(i == len+1)
|
|
p[-1] = '=';
|
|
else
|
|
if(i == len+2) {
|
|
p[-1] = '=';
|
|
p[-2] = '=';
|
|
}
|
|
*p = '\0';
|
|
*pp = p;
|
|
return;
|
|
}
|
|
|
|
char *auth(user, pass)
|
|
char *user;
|
|
char *pass;
|
|
{
|
|
static char a[128];
|
|
char up[128];
|
|
char *p;
|
|
|
|
strcpy(a, "BASIC ");
|
|
p = a + 6;
|
|
sprintf(up, "%s:%s", user, pass);
|
|
encode64(&p, up);
|
|
|
|
return(a);
|
|
}
|
|
|
|
int skipit(buf, len, skip)
|
|
char *buf;
|
|
int len;
|
|
int *skip;
|
|
{
|
|
static int lf = 0;
|
|
static int crlf = 0;
|
|
char *p;
|
|
|
|
p = buf;
|
|
|
|
while(--len >= 0) {
|
|
if((crlf == 0 || crlf == 2) && *p == '\r')
|
|
crlf++;
|
|
else
|
|
if((crlf == 1 || crlf == 3) && *p == '\n')
|
|
crlf++;
|
|
else
|
|
crlf = 0;
|
|
if(*p == '\n')
|
|
lf++;
|
|
else
|
|
lf = 0;
|
|
if(crlf == 4 || lf == 2) {
|
|
*skip = 0;
|
|
return(len);
|
|
}
|
|
p++;
|
|
}
|
|
|
|
return(0);
|
|
}
|
|
|
|
int httpget(host, port, user, pass, path, headers, discard, post)
|
|
char *host;
|
|
int port;
|
|
char *user;
|
|
char *pass;
|
|
char *path;
|
|
int headers;
|
|
int discard;
|
|
int post;
|
|
{
|
|
int fd;
|
|
int skip;
|
|
int s;
|
|
int s2;
|
|
char *a;
|
|
char *qs;
|
|
int len;
|
|
|
|
if(port == 0)
|
|
port = 80;
|
|
|
|
fd = connect(host, port);
|
|
if(fd < 0) {
|
|
fprintf(stderr, "httpget: Could not connect to %s:%d\n", host, port);
|
|
return(-1);
|
|
}
|
|
|
|
if(post) {
|
|
qs = strrchr(path, '?');
|
|
if(qs != (char *)NULL) {
|
|
*qs++ = '\0';
|
|
len = strlen(qs);
|
|
} else
|
|
len = 0;
|
|
}
|
|
|
|
if(post && len > 0)
|
|
write(fd, "POST ", 5);
|
|
else
|
|
write(fd, "GET ", 4);
|
|
write(fd, path, strlen(path));
|
|
write(fd, " HTTP/1.0\r\n", 11);
|
|
write(fd, "User-Agent: urlget\r\n", 20);
|
|
write(fd, "Connection: Close\r\n", 19);
|
|
if(*user) {
|
|
write(fd, "Authorization: ", 15);
|
|
a = auth(user, pass);
|
|
write(fd, a, strlen(a));
|
|
write(fd, "\r\n", 2);
|
|
}
|
|
if(post && len > 0) {
|
|
sprintf(buffer, "Content-Length: %u\r\n", len);
|
|
write(fd, buffer, strlen(buffer));
|
|
}
|
|
write(fd, "Host: ", 6);
|
|
write(fd, host, strlen(host));
|
|
write(fd, "\r\n", 2);
|
|
write(fd, "\r\n", 2);
|
|
if(post && len > 0)
|
|
write(fd, qs, len);
|
|
|
|
skip = 1;
|
|
while((s = read(fd, buffer, sizeof(buffer)-1)) > 0) {
|
|
buffer[s] = '\0';
|
|
if(skip) {
|
|
static int firstline = 1;
|
|
if(firstline) {
|
|
static char linebuf[1000];
|
|
int l = 0;
|
|
int c, v1, v2, e;
|
|
if(s >= sizeof(linebuf)-l)
|
|
c = sizeof(linebuf)-1-l;
|
|
else c = s;
|
|
memcpy(linebuf+l, buffer, c);
|
|
linebuf[l+c] = '\0';
|
|
if(strchr(buffer, '\n') || strchr(buffer, '\r'))
|
|
firstline = 0;
|
|
if(sscanf(linebuf, "HTTP/%d.%d %d ", &v1, &v2, &e) == 3
|
|
&& e != 200) {
|
|
fprintf(stderr, "HTTP error %d\n", e);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
s2 = skipit(buffer, s, &skip);
|
|
if(headers)
|
|
write(1, buffer, s - s2);
|
|
} else
|
|
s2 = s;
|
|
if(s2 && !discard)
|
|
if(write(1, &buffer[s - s2], s2) != s2) {
|
|
perror("write");
|
|
return(-1);
|
|
}
|
|
}
|
|
if(s < 0) {
|
|
fprintf(stderr, "httpget: Read error\n");
|
|
return(-1);
|
|
}
|
|
|
|
close(fd);
|
|
|
|
return(0);
|
|
}
|
|
|
|
void ftppasv(reply)
|
|
char *reply;
|
|
{
|
|
char *p;
|
|
unsigned char n[6];
|
|
int i;
|
|
|
|
ftppport = 0;
|
|
|
|
p = reply;
|
|
while(*p && *p != '(') p++;
|
|
if(!*p) return;
|
|
p++;
|
|
i = 0;
|
|
while(1) {
|
|
n[i++] = atoi(p);
|
|
if(i == 6) break;
|
|
p = strchr(p, ',');
|
|
if(p == (char *)NULL) return;
|
|
p++;
|
|
}
|
|
sprintf(ftpphost, "%d.%d.%d.%d", n[0], n[1], n[2], n[3]);
|
|
ftppport = n[4] * 256 + n[5];
|
|
return;
|
|
}
|
|
|
|
int ftpreply(fpr)
|
|
FILE *fpr;
|
|
{
|
|
static char reply[256];
|
|
int s;
|
|
char code[4];
|
|
int ft;
|
|
|
|
do {
|
|
ft = 1;
|
|
do {
|
|
if(fgets(reply, sizeof(reply), fpr) == (char *)NULL)
|
|
return(-1);
|
|
if(ft) {
|
|
ft = 0;
|
|
strncpy(code, reply, 3);
|
|
code[3] = '\0';
|
|
}
|
|
} while(strncmp(reply, code, 3) || reply[3] == '-');
|
|
s = atoi(code);
|
|
} while(s < 200 && s != 125 && s != 150);
|
|
if(s == 227) ftppasv(reply);
|
|
return(s);
|
|
}
|
|
|
|
int ftpcmd(fpw, fpr, cmd, arg)
|
|
FILE *fpw;
|
|
FILE *fpr;
|
|
char *cmd;
|
|
char *arg;
|
|
{
|
|
fprintf(fpw, "%s%s%s\r\n", cmd, *arg ? " " : "", arg);
|
|
fflush(fpw);
|
|
return(ftpreply(fpr));
|
|
}
|
|
|
|
int ftpget(host, port, user, pass, path, type)
|
|
char *host;
|
|
int port;
|
|
char *user;
|
|
char *pass;
|
|
char *path;
|
|
int type;
|
|
{
|
|
int fd;
|
|
int fd2;
|
|
FILE *fpr;
|
|
FILE *fpw;
|
|
int s;
|
|
int s2;
|
|
char *p;
|
|
char *p2;
|
|
char typec[2];
|
|
|
|
if(port == 0)
|
|
port = 21;
|
|
|
|
if(type == '\0')
|
|
type = 'i';
|
|
|
|
fd = connect(host, port);
|
|
if(fd < 0) {
|
|
fprintf(stderr, "ftpget: Could not connect to %s:%d\n", host, port);
|
|
return(-1);
|
|
}
|
|
fpr = fdopen(fd, "r");
|
|
fpw = fdopen(fd, "w");
|
|
|
|
s = ftpreply(fpr);
|
|
if(s / 100 != 2) goto error;
|
|
s = ftpcmd(fpw, fpr, "USER", *user ? user : "ftp");
|
|
if(s / 100 == 3)
|
|
s = ftpcmd(fpw, fpr, "PASS", *pass ? pass : "urlget@");
|
|
|
|
if(s / 100 != 2) goto error;
|
|
|
|
p = path;
|
|
if(*p == '/') p++;
|
|
while((p2 = strchr(p, '/')) != (char *)NULL) {
|
|
*p2++ = '\0';
|
|
s = ftpcmd(fpw, fpr, "CWD", unesc(p));
|
|
p = p2;
|
|
}
|
|
sprintf(typec, "%c", type == 'd' ? 'A' : type);
|
|
s = ftpcmd(fpw, fpr, "TYPE", typec);
|
|
if(s / 100 != 2) goto error;
|
|
s = ftpcmd(fpw, fpr, "PASV", "");
|
|
if(s != 227) goto error;
|
|
fd2 = connect(ftpphost, ftppport);
|
|
if(fd2 < 0) goto error;
|
|
s = ftpcmd(fpw, fpr, type == 'd' ? "NLST" : "RETR", unesc(p));
|
|
if(s / 100 != 1) goto error;
|
|
while((s = read(fd2, buffer, sizeof(buffer))) > 0) {
|
|
s2 = write(1, buffer, s);
|
|
if(s2 != s) break;
|
|
}
|
|
if(s2 != s && s != 0) s = -1;
|
|
close(fd2);
|
|
|
|
s = ftpreply(fpr);
|
|
if(s / 100 == 2) s = 0;
|
|
|
|
error:
|
|
(void) ftpcmd(fpw, fpr, "QUIT", "");
|
|
|
|
fclose(fpr);
|
|
fclose(fpw);
|
|
close(fd);
|
|
|
|
return(s == 0 ? 0 : -1);
|
|
}
|
|
|
|
int tcpget(host, port, user, pass, path)
|
|
char *host;
|
|
int port;
|
|
char *user;
|
|
char *pass;
|
|
char *path;
|
|
{
|
|
int fd;
|
|
int s;
|
|
int s2;
|
|
|
|
if(port == 0) {
|
|
fprintf(stderr, "tcpget: No port specified\n");
|
|
return(-1);
|
|
}
|
|
|
|
fd = connect(host, port);
|
|
if(fd < 0) {
|
|
fprintf(stderr, "httpget: Could not connect to %s:%d\n", host, port);
|
|
return(-1);
|
|
}
|
|
if(*path == '\/')
|
|
path++;
|
|
|
|
write(fd, path, strlen(path));
|
|
write(fd, "\n", 1);
|
|
while((s = read(fd, buffer, sizeof(buffer))) > 0) {
|
|
s2 = write(1, buffer, s);
|
|
if(s2 != s) break;
|
|
}
|
|
close(fd);
|
|
return(0);
|
|
}
|
|
|
|
int main(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
char *prog;
|
|
char *url;
|
|
char scheme;
|
|
char user[64];
|
|
char pass[64];
|
|
char host[64];
|
|
int port;
|
|
char *path;
|
|
int type;
|
|
char *ps;
|
|
char *p;
|
|
char *at;
|
|
int s, c;
|
|
int opt_h = 0;
|
|
int opt_d = 0;
|
|
int opt_p = 0;
|
|
|
|
prog = strrchr(*argv, '/');
|
|
if(prog == (char *)NULL)
|
|
prog = *argv;
|
|
argv++;
|
|
argc--;
|
|
|
|
while(argc && argv[0][0] == '-') {
|
|
char *opt = *argv++ + 1;
|
|
argc--;
|
|
|
|
if (opt[0] == '-' && opt[1] == 0) break;
|
|
|
|
while (*opt) switch (*opt++) {
|
|
case 'h': opt_h = -1; break;
|
|
case 'd': opt_d = -1; break;
|
|
case 'p': opt_p = -1; break;
|
|
default: argc = 0; break;
|
|
}
|
|
}
|
|
|
|
if(strcmp(prog, "ftpget") == 0) {
|
|
if(argc < 2 || argc > 4) {
|
|
fprintf(stderr, "Usage: %s host path [user [pass]]\n", prog);
|
|
return(-1);
|
|
}
|
|
strncpy(host, *argv++, sizeof(host));
|
|
port = 21;
|
|
path = *argv++;
|
|
if(argc) {
|
|
strncpy(user, *argv++, sizeof(user));
|
|
argc++;
|
|
} else
|
|
*user = '\0';
|
|
if(argc) {
|
|
strncpy(pass, *argv++, sizeof(pass));
|
|
argc++;
|
|
} else
|
|
*pass = '\0';
|
|
s = ftpget(host, port, user, pass, path, 'i');
|
|
return(s);
|
|
}
|
|
if(strcmp(prog, "httpget") == 0) {
|
|
if(argc != 2) {
|
|
fprintf(stderr, "Usage: %s [-h] [-d] [-p] host path\n", prog);
|
|
return(-1);
|
|
}
|
|
strncpy(host, *argv++, sizeof(host));
|
|
port = 80;
|
|
path = *argv++;
|
|
s = httpget(host, port, user, path, path, opt_h, opt_d, opt_p);
|
|
return(s);
|
|
}
|
|
|
|
if(argc != 1) {
|
|
usage:
|
|
fprintf(stderr, "Usage: %s [-h] [-p] url\n", prog);
|
|
return(-1);
|
|
}
|
|
|
|
url = *argv++;
|
|
argc--;
|
|
|
|
if(strncasecmp(url, "http://", 7) == 0) {
|
|
scheme = SCHEME_HTTP;
|
|
ps = url + 7;
|
|
} else
|
|
if(strncasecmp(url, "ftp://", 6) == 0) {
|
|
scheme = SCHEME_FTP;
|
|
ps = url + 6;
|
|
} else
|
|
if(strncasecmp(url, "tcp://", 6) == 0) {
|
|
scheme = SCHEME_TCP;
|
|
ps = url + 6;
|
|
} else {
|
|
fprintf(stderr, "%s: I do not handle this scheme\n", prog);
|
|
return(-1);
|
|
}
|
|
|
|
user[0] = '\0';
|
|
pass[0] = '\0';
|
|
host[0] = '\0';
|
|
port = 0;
|
|
|
|
p = ps;
|
|
while(*p && *p != '/') p++;
|
|
path = p;
|
|
c = *path;
|
|
*path = '\0';
|
|
|
|
at = strchr(ps, '@');
|
|
if(at != (char *)NULL) {
|
|
*at = '\0';
|
|
p = ps;
|
|
while(*p && *p != ':') p++;
|
|
if(*p)
|
|
*p++ = '\0';
|
|
strcpy(user, ps);
|
|
strcpy(pass, p);
|
|
ps = at + 1;
|
|
}
|
|
|
|
*path = c;
|
|
p = ps;
|
|
while(*p && *p != '/' && *p != ':') p++;
|
|
strncpy(host, ps, p - ps);
|
|
host[p - ps] = '\0';
|
|
if(*p == ':') {
|
|
p++;
|
|
ps = p;
|
|
while(*p && *p != '/')
|
|
port = port * 10 + (*p++ - '0');
|
|
}
|
|
if(*p == '/')
|
|
path = p;
|
|
else
|
|
path = "/";
|
|
if(scheme == SCHEME_FTP) {
|
|
p = path;
|
|
while(*p && *p != ';') p++;
|
|
if(*p) {
|
|
*p++ = '\0';
|
|
if(strncasecmp(p, "type=", 5) == 0) {
|
|
p += 5;
|
|
type = tolower(*p);
|
|
}
|
|
}
|
|
}
|
|
|
|
#if 0
|
|
fprintf(stderr, "Host: %s\n", host);
|
|
fprintf(stderr, "Port: %d\n", port);
|
|
fprintf(stderr, "User: %s\n", user);
|
|
fprintf(stderr, "Pass: %s\n", pass);
|
|
fprintf(stderr, "Path: %s\n", path);
|
|
fprintf(stderr, "Type: %c\n", type);
|
|
#endif
|
|
|
|
switch(scheme) {
|
|
case SCHEME_HTTP:
|
|
s = httpget(host, port, user, pass, path, opt_h, opt_d, opt_p);
|
|
break;
|
|
case SCHEME_FTP:
|
|
s = ftpget(host, port, user, pass, path, type);
|
|
break;
|
|
case SCHEME_TCP:
|
|
s = tcpget(host, port, user, pass, path);
|
|
break;
|
|
}
|
|
|
|
return(s);
|
|
}
|