28,15 → 28,20 |
*/ |
|
#include <stdio.h> |
#include <stdlib.h> |
#include <string.h> |
#include <time.h> |
|
#include "net.h" |
|
#define PVER "20210121" |
#define PDATE "2021" |
|
#define HOSTADDR "svardos.osdn.io" |
|
|
/* strips http headers and returns new buff len */ |
static int detecthttpheadersend(char *buff, int len) { |
static int detecthttpheadersend(unsigned char *buff, int len) { |
static char lastbyteislf = 0; /* static because I must potentially remember it for next packet/call */ |
int i; |
for (i = 0; i < len; i++) { |
51,8 → 56,8 |
continue; |
} |
/* end of headers! rewind the buffer and return new len */ |
len -= i; |
if (len > 0) memmove(buff, buff + i, len); |
len -= (i + 1); |
if (len > 0) memmove(buff, buff + i + 1, len); |
return(len); |
} |
return(0); |
59,15 → 64,61 |
} |
|
|
static void help(void) { |
puts("pkgnet ver " PVER " -- Copyright (C) " PDATE " Mateusz Viste"); |
puts(""); |
puts("pkgnet is the SvarDOS package downloader."); |
puts(""); |
puts("usage: pkgnet search <term>"); |
puts(" pkgnet pull <package>"); |
puts(" pkgnet checkup [<package>]"); |
puts(""); |
puts("actions:"); |
puts(" search - asks remote repository for the list of matching packages"); |
puts(" pull - downloads package into current directory"); |
puts(" checkup - lists available updates (for all packages if no argument)"); |
puts(""); |
} |
|
|
/* parses command line arguments and fills outfname and url accordingly |
* returns 0 on success, non-zero otherwise */ |
static int parseargv(int argc, char * const *argv, char **outfname, char *url) { |
*outfname = NULL; |
*url = 0; |
if ((argc == 3) && (strcasecmp(argv[1], "search") == 0)) { |
sprintf(url, "/pkg.php?a=search&p=%s", argv[2]); |
} else if ((argc == 3) && (strcasecmp(argv[1], "pull") == 0)) { |
sprintf(url, "/pkg.php?a=pull&p=%s", argv[2]); |
*outfname = argv[2]; |
} else if ((argc == 2) && (strcasecmp(argv[1], "checkup") == 0)) { |
puts("NOT SUPPORTED YET"); |
return(-1); |
} else if ((argc == 3) && (strcasecmp(argv[1], "checkup") == 0)) { |
puts("NOT SUPPORTED YET"); |
return(-1); |
} else { |
help(); |
return(-1); |
} |
return(0); |
} |
|
|
int main(int argc, char **argv) { |
char buffer[4096]; |
unsigned char buffer[4096]; |
char url[64]; |
struct net_tcpsocket *sock; |
time_t lastactivity; |
int headersdone; |
int headersdone = 0; |
int httpcode = -1; |
long flen = 0; |
unsigned short bsum = 0; |
char *outfname = NULL; |
FILE *fd = NULL; |
|
/* prepare the query */ |
snprintf(url, sizeof(url), "/pkgnet.php?action=xxx"); |
/* parse command line arguments */ |
if (parseargv(argc, argv, &outfname, url) != 0) return(1); |
|
/* init network stack */ |
if (net_init() != 0) { |
77,12 → 128,12 |
|
puts(""); /* required because watt-32 likes to print out garbage sometimes ("configuring through DHCP...") */ |
|
if (net_dnsresolve(buffer, HOSTADDR) != 0) { |
if (net_dnsresolve((char *)buffer, HOSTADDR) != 0) { |
puts("ERROR: DNS resolution failed"); |
return(1); |
} |
|
sock = net_connect(buffer, 80); |
sock = net_connect((char *)buffer, 80); |
if (sock == NULL) { |
puts("ERROR: failed to connect to " HOSTADDR); |
goto SHITQUIT; |
100,17 → 151,16 |
} |
|
/* socket is connected - send the http request */ |
snprintf(buffer, sizeof(buffer), "GET %s HTTP/1.1\r\nHOST: " HOSTADDR "\r\nUSER-AGENT: pkgnet\r\nConnection: close\r\n\r\n", url); |
snprintf((char *)buffer, sizeof(buffer), "GET %s HTTP/1.1\r\nHOST: " HOSTADDR "\r\nUSER-AGENT: pkgnet\r\nConnection: close\r\n\r\n", url); |
|
if (net_send(sock, buffer, strlen(buffer)) != (int)strlen(buffer)) { |
if (net_send(sock, (char *)buffer, strlen((char *)buffer)) != (int)strlen((char *)buffer)) { |
puts("ERROR: failed to send HTTP query to remote server"); |
goto SHITQUIT; |
} |
|
lastactivity = time(NULL); |
headersdone = 0; |
for (;;) { |
int byteread = net_recv(sock, buffer, sizeof(buffer) - 1); |
int byteread = net_recv(sock, (char *)buffer, sizeof(buffer) - 1); /* -1 because I will append a NULL terminator */ |
|
if (byteread < 0) break; /* end of connection */ |
|
129,6 → 179,19 |
if (byteread > 0) { |
buffer[byteread] = 0; |
lastactivity = time(NULL); |
/* do I know the http code yet? */ |
if (httpcode < 0) { |
httpcode = atoi((char *)buffer); |
/* on error, the answer should be always printed on screen */ |
if ((httpcode == 200) && (outfname != NULL)) { |
fd = fopen(outfname, "wb"); |
if (fd == NULL) { |
printf("ERROR: failed to create file %s", outfname); |
puts(""); |
break; |
} |
} |
} |
/* skip headers: look for \r\n\r\n or \n\n within the stream */ |
if (headersdone == 0) { |
byteread = detecthttpheadersend(buffer, byteread); |
136,10 → 199,36 |
if (byteread == 0) continue; |
} |
/* if downloading to file, write stuff to disk */ |
printf("%s", buffer); |
if (fd != NULL) { |
int i; |
if (fwrite(buffer, 1, byteread, fd) != byteread) { |
printf("ERROR: failed to write data to file %s after %ld bytes", outfname, flen); |
puts(""); |
break; |
} |
flen += byteread; |
/* update the bsd sum */ |
for (i = 0; i < byteread; i++) { |
/* rotr16 */ |
unsigned short bsumlsb = bsum & 1; |
bsum >>= 1; |
bsum |= (bsumlsb << 15); |
/* bsum += ch */ |
bsum += buffer[i]; |
} |
} else { /* otherwise dump to screen */ |
printf("%s", buffer); |
} |
} |
} |
|
if (fd != NULL) { |
/* print bsum, size, filename */ |
printf("Downloaded %ld KiB into %s (BSUM: %04X)", flen >> 10, outfname, bsum); |
puts(""); |
fclose(fd); |
} |
|
net_close(sock); |
return(0); |
|