WebSVN – SvarDOS – Diff – /pkgnet/trunk/pkgnet.c


/*
 * pkgnet - pulls SvarDOS packages from the project's online repository
 *
 * PUBLISHED UNDER THE TERMS OF THE MIT LICENSE
 *
 * COPYRIGHT (C) 2016-2022 MATEUSZ VISTE, ALL RIGHTS RESERVED.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *
 * http://svardos.osdn.io
 */
 
#include <direct.h> /* opendir() and friends */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
 
#include "net.h"
#include "unchunk.h"
 
#include "../pkg/lsm.h"
 
 
#define PVER "20220119"
#define PDATE "2021-2022"
 
#define HOSTADDR "svardos.osdn.io"
 
 
/* returns length of all http headers, or 0 if uncomplete yet */
static unsigned short detecthttpheadersend(const unsigned char *buff) {
  char lastbyteislf = 0;
  unsigned short i;
  for (i = 0; buff[i] != 0; i++) {
    if (buff[i] == '\r') continue; /* ignore CR characters */
    if (buff[i] != '\n') {
      lastbyteislf = 0;
      continue;
    }
    /* cur byte is LF -> if last one was also LF then this is an empty line, meaning headers are over */
    if (lastbyteislf == 0) {
      lastbyteislf = 1;
      continue;
    }
    /* end of headers! return length of headers */
    return(i + 1); /* add 1 to skip the current \n character */
  }
  return(0);
}
 
 
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 pull <package>-<version>");
  puts("        pkgnet checkup");
  puts("");
  puts("actions:");
  puts(" search   - asks remote repository for the list of matching packages");
  puts(" pull     - downloads package into current directory");
  puts(" checkup  - lists updates available for your system");
  puts("");
  printf("Watt32 kernel: %s", net_engine());
  puts("");
  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, int *ispost) {
  *outfname = 0;
  *url = 0;
  *ispost = 0;
  if ((argc == 3) && (strcasecmp(argv[1], "search") == 0)) {
    sprintf(url, "/repo/?a=search&p=%s", argv[2]);
  } else if ((argc == 3) && (strcasecmp(argv[1], "pull") == 0)) {
    unsigned short i;
    sprintf(url, "/repo/?a=pull&p=%s", argv[2]);
    /* copy argv[2] into outfname, but stop at first '-' or null terminator
     * this trims any '-version' part in filename to respect 8+3 */
    for (i = 0; (argv[2][i] != 0) && (argv[2][i] != '-') && (i < 8); i++) {
      outfname[i] = argv[2][i];
    }
    /* add the zip extension to filename */
    strcpy(outfname + i, ".zip");
  } else if ((argc == 2) && (strcasecmp(argv[1], "checkup") == 0)) {
    sprintf(url, "/repo/?a=checkup");
    *ispost = 1;
  } else {
    help();
    return(-1);
  }
  return(0);
}
 
 
static int htget_headers(unsigned char *buffer, size_t buffersz, struct net_tcpsocket *sock, int *httpcode, int *ischunked)  {
  unsigned char *buffptr = buffer;
  unsigned short bufflen = 0;
  int byteread;
  time_t starttime = time(NULL);
  for (;;) {
    byteread = net_recv(sock, buffptr, buffersz - (bufflen + 1)); /* -1 because I will append a NULL terminator */
 
    if (byteread > 0) { /* got data */
      int hdlen;
      bufflen += byteread;
      buffptr += byteread;
      buffer[bufflen] = 0;
      hdlen = detecthttpheadersend(buffer);
      if (hdlen > 0) { /* full headers - parse http code and continue processing */
        int i;
        buffer[hdlen - 1] = 0;
        /* find the first space (HTTP/1.1 200 OK) */
        for (i = 0; i < 16; i++) {
          if ((buffer[i] == ' ') || (buffer[i] == 0)) break;
        }
        if (buffer[i] != ' ') return(-1);
        *httpcode = atoi((char *)(buffer + i + 1));
        /* switch all headers to low-case so it is easier to parse them */
        for (i = 0; i < hdlen; i++) if ((buffer[i] >= 'A') && (buffer[i] <= 'Z')) buffer[i] += ('a' - 'A');
        /* look out for chunked transfer encoding */
        {
        char *lineptr = strstr((char *)buffer, "\ntransfer-encoding:");
        if (lineptr != NULL) {
          lineptr += 19;
          /* replace nearest \r, \n or 0 by 0 */
          for (i = 0; ; i++) {
            if ((lineptr[i] == '\r') || (lineptr[i] == '\n') || (lineptr[i] == 0)) {
              lineptr[i] = 0;
              break;
            }
          }
          /* do I see the 'chunked' word? */
          if (strstr((char *)lineptr, "chunked") != NULL) *ischunked = 1;
        }
        }
        /* rewind the buffer */
        bufflen -= hdlen;
        memmove(buffer, buffer + hdlen, bufflen);
        return(bufflen); /* move to body processing now */
      }
 
    } else if (byteread < 0) { /* abort on error */
      return(-2); /* unexpected end of connection (while waiting for all http headers) */
 
    } else { /* else no data received - look for timeout and release a cpu cycle */
      if (time(NULL) - starttime > 20) return(-3); /* TIMEOUT! */
      _asm int 28h; /* release a CPU cycle */
    }
  }
}
 
 
/* provides body data of the POST query for checkup actions
   fills buff with data and returns data length.
   must be called repeateadly until zero-lengh is returned */
static unsigned short checkupdata(char *buff) {
  static char *dosdir = NULL;
  static DIR *dp;
  static struct dirent *ep;
 
  /* make sure I know %DOSDIR% */
  if (dosdir == NULL) {
    dosdir = getenv("DOSDIR");
    if ((dosdir == NULL) || (dosdir[0] == 0)) {
      puts("ERROR: %DOSDIR% not set");
      return(0);
    }
  }
 
  /* if first call, open the package directory */
  if (dp == NULL) {
    sprintf(buff, "%s\\packages", dosdir);
    dp = opendir(buff);
    if (dp == NULL) {
      puts("ERROR: Could not access %DOSDIR%\\packages directory");
      return(0);
    }
  }
 
  for (;;) {
    int tlen;
    char ver[20];
    ep = readdir(dp);   /* readdir() result must never be freed (statically allocated) */
    if (ep == NULL) {   /* no more entries */
      closedir(dp);
      return(0);
    }
 
    tlen = strlen(ep->d_name);
    if (tlen < 4) continue; /* files must be at least 5 bytes long ("x.lst") */
    if (strcasecmp(ep->d_name + tlen - 4, ".lst") != 0) continue;  /* if not an .lst file, skip it silently */
    ep->d_name[tlen - 4] = 0; /* trim out the ".lst" suffix */
 
    /* load the metadata from %DOSDIR\APPINFO\*.lsm */
    sprintf(buff, "%s\\appinfo\\%s.lsm", dosdir, ep->d_name);
    readlsm(buff, ver, sizeof(ver));
 
    return(sprintf(buff, "%s\t%s\n", ep->d_name, ver));
  }
}
 
 
/* fetch http data from ipaddr using url
 * write result to file outfname if not null, or print to stdout otherwise
 * fills bsum with the BSD sum of the data
 * is ispost is non-zero, then the request is a POST and its body data is
 * obtained through repeated calls to checkupdata()
 * returns the length of data obtained, or neg value on error */
static long htget(const char *ipaddr, const char *url, const char *outfname, unsigned short *bsum, int ispost, unsigned char *buffer, size_t buffersz) {
  struct net_tcpsocket *sock;
  time_t lastactivity, lastprogressoutput = 0;
  int httpcode = -1, ischunked = 0;
  int byteread;
  long flen = 0, lastflen = 0;
  FILE *fd = NULL;
 
  /* unchunk state variable is using a little part of the supplied buffer */
  struct unchunk_state *unchstate = (void *)buffer;
  buffer += sizeof(*unchstate);
  buffersz -= sizeof(*unchstate);
  memset(unchstate, 0, sizeof(*unchstate));
 
  sock = net_connect(ipaddr, 80);
  if (sock == NULL) {
    puts("ERROR: failed to connect to " HOSTADDR);
    goto SHITQUIT;
  }
 
  /* wait for net_connect() to actually connect */
  for (;;) {
    int connstate = net_isconnected(sock);
    if (connstate > 0) break;
    if (connstate < 0) {
      puts("ERROR: connection error");
      goto SHITQUIT;
    }
    _asm int 28h;  /* DOS idle */
  }
 
  /* socket is connected - send the http request (MUST be HTTP/1.0 because I do not support chunked transfers!) */
  if (ispost) {
    snprintf((char *)buffer, buffersz, "POST %s HTTP/1.1\r\nHOST: " HOSTADDR "\r\nUSER-AGENT: pkgnet/" PVER "\r\nTransfer-Encoding: chunked\r\nConnection: close\r\n\r\n", url);
  } else {
    snprintf((char *)buffer, buffersz, "GET %s HTTP/1.1\r\nHOST: " HOSTADDR "\r\nUSER-AGENT: pkgnet/" PVER "\r\nConnection: close\r\n\r\n", url);
  }
 
  if (net_send(sock, buffer, strlen((char *)buffer)) != (int)strlen((char *)buffer)) {
    puts("ERROR: failed to send HTTP query to remote server");
    goto SHITQUIT;
  }
 
  /* send chunked data for POST queries */
  if (ispost) {
    unsigned short blen;
    int hlen;
    char *hbuf = (char *)buffer + buffersz - 16;
    do {
      blen = checkupdata((char *)buffer);
      if (blen == 0) { /* last item contains the message trailer */
        hlen = sprintf(hbuf, "0\r\n");
      } else {
        hlen = sprintf(hbuf, "%X\r\n", blen);
      }
      if (net_send(sock, hbuf, hlen) != hlen) {
        puts("ERROR: failed to send POST data to remote server");
        goto SHITQUIT;
      }
      /* add trailing CR/LF to buffer as required by chunked mode */
      buffer[blen++] = '\r';
      buffer[blen++] = '\n';
      if (net_send(sock, buffer, blen) != blen) {
        puts("ERROR: failed to send POST data to remote server");
        goto SHITQUIT;
      }
    } while (blen != 2);
  }
 
  /* receive and process HTTP headers */
  byteread = htget_headers(buffer, buffersz, sock, &httpcode, &ischunked);
 
  /* transmission error? */
  if (byteread < 0) {
    printf("ERROR: communication error (%d)", byteread);
    puts("");
    goto SHITQUIT;
  }
 
  /* open destination file if required and if no server-side error occured */
  if ((httpcode >= 200) && (httpcode <= 299) && (*outfname != 0)) {
    fd = fopen(outfname, "wb");
    if (fd == NULL) {
      printf("ERROR: failed to create file %s", outfname);
      puts("");
      goto SHITQUIT;
    }
  }
 
  /* read body of the answer (and chunk-decode it if needed) */
  lastactivity = time(NULL);
  for (;; byteread = net_recv(sock, buffer, buffersz - 1)) { /* read 1 byte less because I need to append a NULL terminator when printf'ing the content */
 
    if (byteread > 0) { /* got data */
      lastactivity = time(NULL);
 
      /* unpack data if server transmits in chunked mode */
      if (ischunked) byteread = unchunk(buffer, byteread, unchstate);
 
      /* if downloading to file, write stuff to disk */
      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 progress once a sec */
        if (lastprogressoutput != lastactivity) {
          lastprogressoutput = lastactivity;
          printf("%ld KiB (%ld KiB/s)     \r", flen >> 10, (flen >> 10) - (lastflen >> 10)); /* trailing spaces are meant to avoid leaving garbage on screen if speed goes from, say, 1000 KiB/s to 9 KiB/s */
          lastflen = flen;
          fflush(stdout); /* avoid console buffering */
        }
        /* update the bsd sum */
        for (i = 0; i < byteread; i++) {
          /* rotr16 */
          unsigned short bsumlsb = *bsum & 1;
          *bsum >>= 1;
          *bsum |= (bsumlsb << 15);
          *bsum += buffer[i];
        }
      } else { /* otherwise dump to screen */
        buffer[byteread] = 0;
        printf("%s", buffer);
      }
 
    } else if (byteread < 0) { /* end of connection */
      break;
 
    } else { /* check for timeout (byteread == 0) */
      if (time(NULL) - lastactivity > 20) { /* TIMEOUT! */
        puts("ERROR: Timeout while waiting for data");
        goto SHITQUIT;
      }
      /* waiting for packets - release a CPU cycle in the meantime */
      _asm int 28h;
    }
  }
 
  goto ALLGOOD;
 
  SHITQUIT:
  flen = -1;
 
  ALLGOOD:
  if (fd != NULL) fclose(fd);
  net_close(sock);
  return(flen);
}
 
 
/* checks if file exists, returns 0 if not, non-zero otherwise */
static int fexists(const char *fname) {
  FILE *fd = fopen(fname, "rb");
  if (fd == NULL) return(0);
  fclose(fd);
  return(1);
}
 
 
int main(int argc, char **argv) {
  unsigned short bsum = 0;
  long flen;
  int ispost; /* is the request a POST? */
 
  struct {
    unsigned char buffer[5000];
    char ipaddr[64];
    char url[64];
    char outfname[16];
  } *mem;
 
  /* allocate memory */
  mem = malloc(sizeof(*mem));
  if (mem == NULL) {
    puts("ERROR: out of memory");
    return(1);
  }
 
  /* parse command line arguments */
  if (parseargv(argc, argv, mem->outfname, mem->url, &ispost) != 0) return(1);
 
  /* if outfname requested, make sure that file does not exist yet */
  if ((mem->outfname[0] != 0) && (fexists(mem->outfname))) {
    printf("ERROR: file %s already exists", mem->outfname);
    puts("");
    return(1);
  }
 
  /* init network stack */
  if (net_init() != 0) {
    puts("ERROR: Network subsystem initialization failed");
    return(1);
  }
 
  puts(""); /* required because watt-32 likes to print out garbage sometimes ("configuring through DHCP...") */
 
  if (net_dnsresolve(mem->ipaddr, HOSTADDR) != 0) {
    puts("ERROR: DNS resolution failed");
    return(1);
  }
 
  flen = htget(mem->ipaddr, mem->url, mem->outfname, &bsum, ispost, mem->buffer, sizeof(mem->buffer));
  if (flen < 1) return(1);
 
  if (mem->outfname[0] != 0) {
    /* print bsum, size, filename */
    printf("Downloaded %ld KiB into %s (BSUM: %04X)", flen >> 10, mem->outfname, bsum);
    puts("");
  }
 
  return(0);
}
 

Rev 558	Rev 616
1	`/*`	1	`/*`
2	`* pkgnet - pulls SvarDOS packages from the project's online repository`	2	`* pkgnet - pulls SvarDOS packages from the project's online repository`
3	`*`	3	`*`
4	`* PUBLISHED UNDER THE TERMS OF THE MIT LICENSE`	4	`* PUBLISHED UNDER THE TERMS OF THE MIT LICENSE`
5	`*`	5	`*`
6	`* COPYRIGHT (C) 2016-2022 MATEUSZ VISTE, ALL RIGHTS RESERVED.`	6	`* COPYRIGHT (C) 2016-2022 MATEUSZ VISTE, ALL RIGHTS RESERVED.`
7	`*`	7	`*`
8	`* Permission is hereby granted, free of charge, to any person obtaining a`	8	`* Permission is hereby granted, free of charge, to any person obtaining a`
9	`* copy of this software and associated documentation files (the "Software"),`	9	`* copy of this software and associated documentation files (the "Software"),`
10	`* to deal in the Software without restriction, including without limitation`	10	`* to deal in the Software without restriction, including without limitation`
11	`* the rights to use, copy, modify, merge, publish, distribute, sublicense,`	11	`* the rights to use, copy, modify, merge, publish, distribute, sublicense,`
12	`* and/or sell copies of the Software, and to permit persons to whom the`	12	`* and/or sell copies of the Software, and to permit persons to whom the`
13	`* Software is furnished to do so, subject to the following conditions:`	13	`* Software is furnished to do so, subject to the following conditions:`
14	`*`	14	`*`
15	`* The above copyright notice and this permission notice shall be included in`	15	`* The above copyright notice and this permission notice shall be included in`
16	`* all copies or substantial portions of the Software.`	16	`* all copies or substantial portions of the Software.`
17	`*`	17	`*`
18	`* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR`	18	`* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR`
19	`* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,`	19	`* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,`
20	`* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE`	20	`* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE`
21	`* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER`	21	`* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER`
22	`* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING`	22	`* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING`
23	`* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER`	23	`* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER`
24	`* DEALINGS IN THE SOFTWARE.`	24	`* DEALINGS IN THE SOFTWARE.`
25	`*`	25	`*`
26	`* http://svardos.osdn.io`	26	`* http://svardos.osdn.io`
27	`*/`	27	`*/`
28		28
29	`#include <direct.h> /* opendir() and friends */`	29	`#include <direct.h> /* opendir() and friends */`
30	`#include <stdio.h>`	30	`#include <stdio.h>`
31	`#include <stdlib.h>`	31	`#include <stdlib.h>`
32	`#include <string.h>`	32	`#include <string.h>`
33	`#include <time.h>`	33	`#include <time.h>`
34		34
35	`#include "net.h"`	35	`#include "net.h"`
36	`#include "unchunk.h"`	36	`#include "unchunk.h"`
37		37
38	`#include "../pkg/lsm.h"`	38	`#include "../pkg/lsm.h"`
39		39
40		40
41	`#define PVER "20220119"`	41	`#define PVER "20220119"`
42	`#define PDATE "2021-2022"`	42	`#define PDATE "2021-2022"`
43		43
44	`#define HOSTADDR "svardos.osdn.io"`	44	`#define HOSTADDR "svardos.osdn.io"`
45		45
46		46
47	`/* returns length of all http headers, or 0 if uncomplete yet */`	47	`/* returns length of all http headers, or 0 if uncomplete yet */`
48	`static unsigned short detecthttpheadersend(const unsigned char *buff) {`	48	`static unsigned short detecthttpheadersend(const unsigned char *buff) {`
49	`char lastbyteislf = 0;`	49	`char lastbyteislf = 0;`
50	`unsigned short i;`	50	`unsigned short i;`
51	`for (i = 0; buff[i] != 0; i++) {`	51	`for (i = 0; buff[i] != 0; i++) {`
52	`if (buff[i] == '\r') continue; /* ignore CR characters */`	52	`if (buff[i] == '\r') continue; /* ignore CR characters */`
53	`if (buff[i] != '\n') {`	53	`if (buff[i] != '\n') {`
54	`lastbyteislf = 0;`	54	`lastbyteislf = 0;`
55	`continue;`	55	`continue;`
56	`}`	56	`}`
57	`/* cur byte is LF -> if last one was also LF then this is an empty line, meaning headers are over */`	57	`/* cur byte is LF -> if last one was also LF then this is an empty line, meaning headers are over */`
58	`if (lastbyteislf == 0) {`	58	`if (lastbyteislf == 0) {`
59	`lastbyteislf = 1;`	59	`lastbyteislf = 1;`
60	`continue;`	60	`continue;`
61	`}`	61	`}`
62	`/* end of headers! return length of headers */`	62	`/* end of headers! return length of headers */`
63	`return(i + 1); /* add 1 to skip the current \n character */`	63	`return(i + 1); /* add 1 to skip the current \n character */`
64	`}`	64	`}`
65	`return(0);`	65	`return(0);`
66	`}`	66	`}`
67		67
68		68
69	`static void help(void) {`	69	`static void help(void) {`
70	`puts("pkgnet ver " PVER " -- Copyright (C) " PDATE " Mateusz Viste");`	70	`puts("pkgnet ver " PVER " -- Copyright (C) " PDATE " Mateusz Viste");`
71	`puts("");`	71	`puts("");`
72	`puts("pkgnet is the SvarDOS package downloader.");`	72	`puts("pkgnet is the SvarDOS package downloader.");`
73	`puts("");`	73	`puts("");`
74	`puts("usage: pkgnet search <term>");`	74	`puts("usage: pkgnet search <term>");`
75	`puts(" pkgnet pull <package>");`	75	`puts(" pkgnet pull <package>");`
76	`puts(" pkgnet pull <package>-<version>");`	76	`puts(" pkgnet pull <package>-<version>");`
77	`puts(" pkgnet checkup");`	77	`puts(" pkgnet checkup");`
78	`puts("");`	78	`puts("");`
79	`puts("actions:");`	79	`puts("actions:");`
80	`puts(" search - asks remote repository for the list of matching packages");`	80	`puts(" search - asks remote repository for the list of matching packages");`
81	`puts(" pull - downloads package into current directory");`	81	`puts(" pull - downloads package into current directory");`
82	`puts(" checkup - lists updates available for your system");`	82	`puts(" checkup - lists updates available for your system");`
83	`puts("");`	83	`puts("");`
84	`printf("Watt32 kernel: %s", net_engine());`	84	`printf("Watt32 kernel: %s", net_engine());`
85	`puts("");`	85	`puts("");`
86	`puts("");`	86	`puts("");`
87	`}`	87	`}`
88		88
89		89
90	`/* parses command line arguments and fills outfname and url accordingly`	90	`/* parses command line arguments and fills outfname and url accordingly`
91	`* returns 0 on success, non-zero otherwise */`	91	`* returns 0 on success, non-zero otherwise */`
92	`static int parseargv(int argc, char * const argv, char outfname, char url, int ispost) {`	92	`static int parseargv(int argc, char * const argv, char outfname, char url, int ispost) {`
93	`*outfname = 0;`	93	`*outfname = 0;`
94	`*url = 0;`	94	`*url = 0;`
95	`*ispost = 0;`	95	`*ispost = 0;`
96	`if ((argc == 3) && (strcasecmp(argv[1], "search") == 0)) {`	96	`if ((argc == 3) && (strcasecmp(argv[1], "search") == 0)) {`
97	`sprintf(url, "/repo/?a=search&p=%s", argv[2]);`	97	`sprintf(url, "/repo/?a=search&p=%s", argv[2]);`
98	`} else if ((argc == 3) && (strcasecmp(argv[1], "pull") == 0)) {`	98	`} else if ((argc == 3) && (strcasecmp(argv[1], "pull") == 0)) {`
99	`unsigned short i;`	99	`unsigned short i;`
100	`sprintf(url, "/repo/?a=pull&p=%s", argv[2]);`	100	`sprintf(url, "/repo/?a=pull&p=%s", argv[2]);`
101	`/* copy argv[2] into outfname, but stop at first '-' or null terminator`	101	`/* copy argv[2] into outfname, but stop at first '-' or null terminator`
102	`* this trims any '-version' part in filename to respect 8+3 */`	102	`* this trims any '-version' part in filename to respect 8+3 */`
103	`for (i = 0; (argv[2][i] != 0) && (argv[2][i] != '-') && (i < 8); i++) {`	103	`for (i = 0; (argv[2][i] != 0) && (argv[2][i] != '-') && (i < 8); i++) {`
104	`outfname[i] = argv[2][i];`	104	`outfname[i] = argv[2][i];`
105	`}`	105	`}`
106	`/* add the zip extension to filename */`	106	`/* add the zip extension to filename */`
107	`strcpy(outfname + i, ".zip");`	107	`strcpy(outfname + i, ".zip");`
108	`} else if ((argc == 2) && (strcasecmp(argv[1], "checkup") == 0)) {`	108	`} else if ((argc == 2) && (strcasecmp(argv[1], "checkup") == 0)) {`
109	`sprintf(url, "/repo/?a=checkup");`	109	`sprintf(url, "/repo/?a=checkup");`
110	`*ispost = 1;`	110	`*ispost = 1;`
111	`} else {`	111	`} else {`
112	`help();`	112	`help();`
113	`return(-1);`	113	`return(-1);`
114	`}`	114	`}`
115	`return(0);`	115	`return(0);`
116	`}`	116	`}`
117		117
118		118
119	`static int htget_headers(unsigned char buffer, size_t buffersz, struct net_tcpsocket sock, int httpcode, int ischunked) {`	119	`static int htget_headers(unsigned char buffer, size_t buffersz, struct net_tcpsocket sock, int httpcode, int ischunked) {`
120	`unsigned char *buffptr = buffer;`	120	`unsigned char *buffptr = buffer;`
121	`unsigned short bufflen = 0;`	121	`unsigned short bufflen = 0;`
122	`int byteread;`	122	`int byteread;`
123	`time_t starttime = time(NULL);`	123	`time_t starttime = time(NULL);`
124	`for (;;) {`	124	`for (;;) {`
125	`byteread = net_recv(sock, buffptr, buffersz - (bufflen + 1)); /* -1 because I will append a NULL terminator */`	125	`byteread = net_recv(sock, buffptr, buffersz - (bufflen + 1)); /* -1 because I will append a NULL terminator */`
126		126
127	`if (byteread > 0) { /* got data */`	127	`if (byteread > 0) { /* got data */`
128	`int hdlen;`	128	`int hdlen;`
129	`bufflen += byteread;`	129	`bufflen += byteread;`
130	`buffptr += byteread;`	130	`buffptr += byteread;`
131	`buffer[bufflen] = 0;`	131	`buffer[bufflen] = 0;`
132	`hdlen = detecthttpheadersend(buffer);`	132	`hdlen = detecthttpheadersend(buffer);`
133	`if (hdlen > 0) { /* full headers - parse http code and continue processing */`	133	`if (hdlen > 0) { /* full headers - parse http code and continue processing */`
134	`int i;`	134	`int i;`
135	`buffer[hdlen - 1] = 0;`	135	`buffer[hdlen - 1] = 0;`
136	`/* find the first space (HTTP/1.1 200 OK) */`	136	`/* find the first space (HTTP/1.1 200 OK) */`
137	`for (i = 0; i < 16; i++) {`	137	`for (i = 0; i < 16; i++) {`
138	`if ((buffer[i] == ' ') \|\| (buffer[i] == 0)) break;`	138	`if ((buffer[i] == ' ') \|\| (buffer[i] == 0)) break;`
139	`}`	139	`}`
140	`if (buffer[i] != ' ') return(-1);`	140	`if (buffer[i] != ' ') return(-1);`
141	`httpcode = atoi((char )(buffer + i + 1));`	141	`httpcode = atoi((char )(buffer + i + 1));`
142	`/* switch all headers to low-case so it is easier to parse them */`	142	`/* switch all headers to low-case so it is easier to parse them */`
143	`for (i = 0; i < hdlen; i++) if ((buffer[i] >= 'A') && (buffer[i] <= 'Z')) buffer[i] += ('a' - 'A');`	143	`for (i = 0; i < hdlen; i++) if ((buffer[i] >= 'A') && (buffer[i] <= 'Z')) buffer[i] += ('a' - 'A');`
144	`/* look out for chunked transfer encoding */`	144	`/* look out for chunked transfer encoding */`
145	`{`	145	`{`
146	`char lineptr = strstr((char )buffer, "\ntransfer-encoding:");`	146	`char lineptr = strstr((char )buffer, "\ntransfer-encoding:");`
147	`if (lineptr != NULL) {`	147	`if (lineptr != NULL) {`
148	`lineptr += 19;`	148	`lineptr += 19;`
149	`/* replace nearest \r, \n or 0 by 0 */`	149	`/* replace nearest \r, \n or 0 by 0 */`
150	`for (i = 0; ; i++) {`	150	`for (i = 0; ; i++) {`
151	`if ((lineptr[i] == '\r') \|\| (lineptr[i] == '\n') \|\| (lineptr[i] == 0)) {`	151	`if ((lineptr[i] == '\r') \|\| (lineptr[i] == '\n') \|\| (lineptr[i] == 0)) {`
152	`lineptr[i] = 0;`	152	`lineptr[i] = 0;`
153	`break;`	153	`break;`
154	`}`	154	`}`
155	`}`	155	`}`
156	`/* do I see the 'chunked' word? */`	156	`/* do I see the 'chunked' word? */`
157	`if (strstr((char )lineptr, "chunked") != NULL) ischunked = 1;`	157	`if (strstr((char )lineptr, "chunked") != NULL) ischunked = 1;`
158	`}`	158	`}`
159	`}`	159	`}`
160	`/* rewind the buffer */`	160	`/* rewind the buffer */`
161	`bufflen -= hdlen;`	161	`bufflen -= hdlen;`
162	`memmove(buffer, buffer + hdlen, bufflen);`	162	`memmove(buffer, buffer + hdlen, bufflen);`
163	`return(bufflen); /* move to body processing now */`	163	`return(bufflen); /* move to body processing now */`
164	`}`	164	`}`
165		165
166	`} else if (byteread < 0) { /* abort on error */`	166	`} else if (byteread < 0) { /* abort on error */`
167	`return(-2); /* unexpected end of connection (while waiting for all http headers) */`	167	`return(-2); /* unexpected end of connection (while waiting for all http headers) */`
168		168
169	`} else { /* else no data received - look for timeout and release a cpu cycle */`	169	`} else { /* else no data received - look for timeout and release a cpu cycle */`
170	`if (time(NULL) - starttime > 20) return(-3); /* TIMEOUT! */`	170	`if (time(NULL) - starttime > 20) return(-3); /* TIMEOUT! */`
171	`_asm int 28h; /* release a CPU cycle */`	171	`_asm int 28h; /* release a CPU cycle */`
172	`}`	172	`}`
173	`}`	173	`}`
174	`}`	174	`}`
175		175
176		176
177	`/* provides body data of the POST query for checkup actions`	177	`/* provides body data of the POST query for checkup actions`
178	`fills buff with data and returns data length.`	178	`fills buff with data and returns data length.`
179	`must be called repeateadly until zero-lengh is returned */`	179	`must be called repeateadly until zero-lengh is returned */`
180	`static unsigned short checkupdata(char *buff) {`	180	`static unsigned short checkupdata(char *buff) {`
181	`static char *dosdir = NULL;`	181	`static char *dosdir = NULL;`
182	`static DIR *dp;`	182	`static DIR *dp;`
183	`static struct dirent *ep;`	183	`static struct dirent *ep;`
184		184
185	`/* make sure I know %DOSDIR% */`	185	`/* make sure I know %DOSDIR% */`
186	`if (dosdir == NULL) {`	186	`if (dosdir == NULL) {`
187	`dosdir = getenv("DOSDIR");`	187	`dosdir = getenv("DOSDIR");`
188	`if ((dosdir == NULL) \|\| (dosdir[0] == 0)) {`	188	`if ((dosdir == NULL) \|\| (dosdir[0] == 0)) {`
189	`puts("ERROR: %DOSDIR% not set");`	189	`puts("ERROR: %DOSDIR% not set");`
190	`return(0);`	190	`return(0);`
191	`}`	191	`}`
192	`}`	192	`}`
193		193
194	`/* if first call, open the package directory */`	194	`/* if first call, open the package directory */`
195	`if (dp == NULL) {`	195	`if (dp == NULL) {`
196	`sprintf(buff, "%s\\packages", dosdir);`	196	`sprintf(buff, "%s\\packages", dosdir);`
197	`dp = opendir(buff);`	197	`dp = opendir(buff);`
198	`if (dp == NULL) {`	198	`if (dp == NULL) {`
199	`puts("ERROR: Could not access %DOSDIR%\\packages directory");`	199	`puts("ERROR: Could not access %DOSDIR%\\packages directory");`
200	`return(0);`	200	`return(0);`
201	`}`	201	`}`
202	`}`	202	`}`
203		203
204	`for (;;) {`	204	`for (;;) {`
205	`int tlen;`	205	`int tlen;`
206	`char ver[20];`	206	`char ver[20];`
207	`ep = readdir(dp); /* readdir() result must never be freed (statically allocated) */`	207	`ep = readdir(dp); /* readdir() result must never be freed (statically allocated) */`
208	`if (ep == NULL) { /* no more entries */`	208	`if (ep == NULL) { /* no more entries */`
209	`closedir(dp);`	209	`closedir(dp);`
210	`return(0);`	210	`return(0);`
211	`}`	211	`}`
212		212
213	`tlen = strlen(ep->d_name);`	213	`tlen = strlen(ep->d_name);`
214	`if (tlen < 4) continue; /* files must be at least 5 bytes long ("x.lst") */`	214	`if (tlen < 4) continue; /* files must be at least 5 bytes long ("x.lst") */`
215	`if (strcasecmp(ep->d_name + tlen - 4, ".lst") != 0) continue; /* if not an .lst file, skip it silently */`	215	`if (strcasecmp(ep->d_name + tlen - 4, ".lst") != 0) continue; /* if not an .lst file, skip it silently */`
216	`ep->d_name[tlen - 4] = 0; /* trim out the ".lst" suffix */`	216	`ep->d_name[tlen - 4] = 0; /* trim out the ".lst" suffix */`
217		217
218	`/* load the metadata from %DOSDIR\APPINFO\.lsm /`	218	`/* load the metadata from %DOSDIR\APPINFO\.lsm /`
219	`sprintf(buff, "%s\\appinfo\\%s.lsm", dosdir, ep->d_name);`	219	`sprintf(buff, "%s\\appinfo\\%s.lsm", dosdir, ep->d_name);`
220	`readlsm(buff, ver, sizeof(ver));`	220	`readlsm(buff, ver, sizeof(ver));`
221		221
222	`return(sprintf(buff, "%s\t%s\n", ep->d_name, ver));`	222	`return(sprintf(buff, "%s\t%s\n", ep->d_name, ver));`
223	`}`	223	`}`
224	`}`	224	`}`
225		225
226		226
227	`/* fetch http data from ipaddr using url`	227	`/* fetch http data from ipaddr using url`
228	`* write result to file outfname if not null, or print to stdout otherwise`	228	`* write result to file outfname if not null, or print to stdout otherwise`
229	`* fills bsum with the BSD sum of the data`	229	`* fills bsum with the BSD sum of the data`
230	`* is ispost is non-zero, then the request is a POST and its body data is`	230	`* is ispost is non-zero, then the request is a POST and its body data is`
231	`* obtained through repeated calls to checkupdata()`	231	`* obtained through repeated calls to checkupdata()`
232	`* returns the length of data obtained, or neg value on error */`	232	`* returns the length of data obtained, or neg value on error */`
233	`static long htget(const char ipaddr, const char url, const char outfname, unsigned short bsum, int ispost, unsigned char *buffer, size_t buffersz) {`	233	`static long htget(const char ipaddr, const char url, const char outfname, unsigned short bsum, int ispost, unsigned char *buffer, size_t buffersz) {`
234	`struct net_tcpsocket *sock;`	234	`struct net_tcpsocket *sock;`
235	`time_t lastactivity, lastprogressoutput = 0;`	235	`time_t lastactivity, lastprogressoutput = 0;`
236	`int httpcode = -1, ischunked = 0;`	236	`int httpcode = -1, ischunked = 0;`
237	`int byteread;`	237	`int byteread;`
238	`long flen = 0, lastflen = 0;`	238	`long flen = 0, lastflen = 0;`
239	`FILE *fd = NULL;`	239	`FILE *fd = NULL;`
240		240
241	`/* unchunk state variable is using a little part of the supplied buffer */`	241	`/* unchunk state variable is using a little part of the supplied buffer */`
242	`struct unchunk_state unchstate = (void )buffer;`	242	`struct unchunk_state unchstate = (void )buffer;`
243	`buffer += sizeof(*unchstate);`	243	`buffer += sizeof(*unchstate);`
244	`buffersz -= sizeof(*unchstate);`	244	`buffersz -= sizeof(*unchstate);`
245	`memset(unchstate, 0, sizeof(*unchstate));`	245	`memset(unchstate, 0, sizeof(*unchstate));`
246		246
247	`sock = net_connect(ipaddr, 80);`	247	`sock = net_connect(ipaddr, 80);`
248	`if (sock == NULL) {`	248	`if (sock == NULL) {`
249	`puts("ERROR: failed to connect to " HOSTADDR);`	249	`puts("ERROR: failed to connect to " HOSTADDR);`
250	`goto SHITQUIT;`	250	`goto SHITQUIT;`
251	`}`	251	`}`
252		252
253	`/* wait for net_connect() to actually connect */`	253	`/* wait for net_connect() to actually connect */`
254	`for (;;) {`	254	`for (;;) {`
255	`int connstate = net_isconnected(sock);`	255	`int connstate = net_isconnected(sock);`
256	`if (connstate > 0) break;`	256	`if (connstate > 0) break;`
257	`if (connstate < 0) {`	257	`if (connstate < 0) {`
258	`puts("ERROR: connection error");`	258	`puts("ERROR: connection error");`
259	`goto SHITQUIT;`	259	`goto SHITQUIT;`
260	`}`	260	`}`
261	`_asm int 28h; /* DOS idle */`	261	`_asm int 28h; /* DOS idle */`
262	`}`	262	`}`
263		263
264	`/* socket is connected - send the http request (MUST be HTTP/1.0 because I do not support chunked transfers!) */`	264	`/* socket is connected - send the http request (MUST be HTTP/1.0 because I do not support chunked transfers!) */`
265	`if (ispost) {`	265	`if (ispost) {`
266	`snprintf((char *)buffer, buffersz, "POST %s HTTP/1.1\r\nHOST: " HOSTADDR "\r\nUSER-AGENT: pkgnet/" PVER "\r\nTransfer-Encoding: chunked\r\nConnection: close\r\n\r\n", url);`	266	`snprintf((char *)buffer, buffersz, "POST %s HTTP/1.1\r\nHOST: " HOSTADDR "\r\nUSER-AGENT: pkgnet/" PVER "\r\nTransfer-Encoding: chunked\r\nConnection: close\r\n\r\n", url);`
267	`} else {`	267	`} else {`
268	`snprintf((char *)buffer, buffersz, "GET %s HTTP/1.1\r\nHOST: " HOSTADDR "\r\nUSER-AGENT: pkgnet/" PVER "\r\nConnection: close\r\n\r\n", url);`	268	`snprintf((char *)buffer, buffersz, "GET %s HTTP/1.1\r\nHOST: " HOSTADDR "\r\nUSER-AGENT: pkgnet/" PVER "\r\nConnection: close\r\n\r\n", url);`
269	`}`	269	`}`
270		270
271	`if (net_send(sock, buffer, strlen((char )buffer)) != (int)strlen((char )buffer)) {`	271	`if (net_send(sock, buffer, strlen((char )buffer)) != (int)strlen((char )buffer)) {`
272	`puts("ERROR: failed to send HTTP query to remote server");`	272	`puts("ERROR: failed to send HTTP query to remote server");`
273	`goto SHITQUIT;`	273	`goto SHITQUIT;`
274	`}`	274	`}`
275		275
276	`/* send chunked data for POST queries */`	276	`/* send chunked data for POST queries */`
277	`if (ispost) {`	277	`if (ispost) {`
278	`unsigned short blen;`	278	`unsigned short blen;`
279	`int hlen;`	279	`int hlen;`
280	`char hbuf = (char )buffer + buffersz - 16;`	280	`char hbuf = (char )buffer + buffersz - 16;`
281	`do {`	281	`do {`
282	`blen = checkupdata((char *)buffer);`	282	`blen = checkupdata((char *)buffer);`
283	`if (blen == 0) { /* last item contains the message trailer */`	283	`if (blen == 0) { /* last item contains the message trailer */`
284	`hlen = sprintf(hbuf, "0\r\n");`	284	`hlen = sprintf(hbuf, "0\r\n");`
285	`} else {`	285	`} else {`
286	`hlen = sprintf(hbuf, "%X\r\n", blen);`	286	`hlen = sprintf(hbuf, "%X\r\n", blen);`
287	`}`	287	`}`
288	`if (net_send(sock, hbuf, hlen) != hlen) {`	288	`if (net_send(sock, hbuf, hlen) != hlen) {`
289	`puts("ERROR: failed to send POST data to remote server");`	289	`puts("ERROR: failed to send POST data to remote server");`
290	`goto SHITQUIT;`	290	`goto SHITQUIT;`
291	`}`	291	`}`
292	`/* add trailing CR/LF to buffer as required by chunked mode */`	292	`/* add trailing CR/LF to buffer as required by chunked mode */`
293	`buffer[blen++] = '\r';`	293	`buffer[blen++] = '\r';`
294	`buffer[blen++] = '\n';`	294	`buffer[blen++] = '\n';`
295	`if (net_send(sock, buffer, blen) != blen) {`	295	`if (net_send(sock, buffer, blen) != blen) {`
296	`puts("ERROR: failed to send POST data to remote server");`	296	`puts("ERROR: failed to send POST data to remote server");`
297	`goto SHITQUIT;`	297	`goto SHITQUIT;`
298	`}`	298	`}`
299	`} while (blen != 2);`	299	`} while (blen != 2);`
300	`}`	300	`}`
301		301
302	`/* receive and process HTTP headers */`	302	`/* receive and process HTTP headers */`
303	`byteread = htget_headers(buffer, buffersz, sock, &httpcode, &ischunked);`	303	`byteread = htget_headers(buffer, buffersz, sock, &httpcode, &ischunked);`
304		304
305	`/* transmission error? */`	305	`/* transmission error? */`
306	`if (byteread < 0) {`	306	`if (byteread < 0) {`
307	`printf("ERROR: communication error (%d)", byteread);`	307	`printf("ERROR: communication error (%d)", byteread);`
308	`puts("");`	308	`puts("");`
309	`goto SHITQUIT;`	309	`goto SHITQUIT;`
310	`}`	310	`}`
311		311
312	`/* open destination file if required and if no server-side error occured */`	312	`/* open destination file if required and if no server-side error occured */`
313	`if ((httpcode >= 200) && (httpcode <= 299) && (*outfname != 0)) {`	313	`if ((httpcode >= 200) && (httpcode <= 299) && (*outfname != 0)) {`
314	`fd = fopen(outfname, "wb");`	314	`fd = fopen(outfname, "wb");`
315	`if (fd == NULL) {`	315	`if (fd == NULL) {`
316	`printf("ERROR: failed to create file %s", outfname);`	316	`printf("ERROR: failed to create file %s", outfname);`
317	`puts("");`	317	`puts("");`
318	`goto SHITQUIT;`	318	`goto SHITQUIT;`
319	`}`	319	`}`
320	`}`	320	`}`
321		321
322	`/* read body of the answer (and chunk-decode it if needed) */`	322	`/* read body of the answer (and chunk-decode it if needed) */`
323	`lastactivity = time(NULL);`	323	`lastactivity = time(NULL);`
324	`for (;; byteread = net_recv(sock, buffer, buffersz - 1)) { /* read 1 byte less because I need to append a NULL terminator when printf'ing the content */`	324	`for (;; byteread = net_recv(sock, buffer, buffersz - 1)) { /* read 1 byte less because I need to append a NULL terminator when printf'ing the content */`
325		325
326	`if (byteread > 0) { /* got data */`	326	`if (byteread > 0) { /* got data */`
327	`lastactivity = time(NULL);`	327	`lastactivity = time(NULL);`
328		328
329	`/* unpack data if server transmits in chunked mode */`	329	`/* unpack data if server transmits in chunked mode */`
330	`if (ischunked) byteread = unchunk(buffer, byteread, unchstate);`	330	`if (ischunked) byteread = unchunk(buffer, byteread, unchstate);`
331		331
332	`/* if downloading to file, write stuff to disk */`	332	`/* if downloading to file, write stuff to disk */`
333	`if (fd != NULL) {`	333	`if (fd != NULL) {`
334	`int i;`	334	`int i;`
335	`if (fwrite(buffer, 1, byteread, fd) != byteread) {`	335	`if (fwrite(buffer, 1, byteread, fd) != byteread) {`
336	`printf("ERROR: failed to write data to file %s after %ld bytes", outfname, flen);`	336	`printf("ERROR: failed to write data to file %s after %ld bytes", outfname, flen);`
337	`puts("");`	337	`puts("");`
338	`break;`	338	`break;`
339	`}`	339	`}`
340	`flen += byteread;`	340	`flen += byteread;`
341	`/* update progress once a sec */`	341	`/* update progress once a sec */`
342	`if (lastprogressoutput != lastactivity) {`	342	`if (lastprogressoutput != lastactivity) {`
343	`lastprogressoutput = lastactivity;`	343	`lastprogressoutput = lastactivity;`
344	`printf("%ld KiB (%ld KiB/s) \r", flen >> 10, (flen >> 10) - (lastflen >> 10)); /* trailing spaces are meant to avoid leaving garbage on screen if speed goes from, say, 1000 KiB/s to 9 KiB/s */`	344	`printf("%ld KiB (%ld KiB/s) \r", flen >> 10, (flen >> 10) - (lastflen >> 10)); /* trailing spaces are meant to avoid leaving garbage on screen if speed goes from, say, 1000 KiB/s to 9 KiB/s */`
345	`lastflen = flen;`	345	`lastflen = flen;`
346	`fflush(stdout); /* avoid console buffering */`	346	`fflush(stdout); /* avoid console buffering */`
347	`}`	347	`}`
348	`/* update the bsd sum */`	348	`/* update the bsd sum */`
349	`for (i = 0; i < byteread; i++) {`	349	`for (i = 0; i < byteread; i++) {`
350	`/* rotr16 */`	350	`/* rotr16 */`
351	`unsigned short bsumlsb = *bsum & 1;`	351	`unsigned short bsumlsb = *bsum & 1;`
352	`*bsum >>= 1;`	352	`*bsum >>= 1;`
353	`*bsum \|= (bsumlsb << 15);`	353	`*bsum \|= (bsumlsb << 15);`
354	`*bsum += buffer[i];`	354	`*bsum += buffer[i];`
355	`}`	355	`}`
356	`} else { /* otherwise dump to screen */`	356	`} else { /* otherwise dump to screen */`
357	`buffer[byteread] = 0;`	357	`buffer[byteread] = 0;`
358	`printf("%s", buffer);`	358	`printf("%s", buffer);`
359	`}`	359	`}`
360		360
361	`} else if (byteread < 0) { /* end of connection */`	361	`} else if (byteread < 0) { /* end of connection */`
362	`break;`	362	`break;`
363		363
364	`} else { /* check for timeout (byteread == 0) */`	364	`} else { /* check for timeout (byteread == 0) */`
365	`if (time(NULL) - lastactivity > 20) { /* TIMEOUT! */`	365	`if (time(NULL) - lastactivity > 20) { /* TIMEOUT! */`
366	`puts("ERROR: Timeout while waiting for data");`	366	`puts("ERROR: Timeout while waiting for data");`
367	`goto SHITQUIT;`	367	`goto SHITQUIT;`
368	`}`	368	`}`
369	`/* waiting for packets - release a CPU cycle in the meantime */`	369	`/* waiting for packets - release a CPU cycle in the meantime */`
370	`_asm int 28h;`	370	`_asm int 28h;`
371	`}`	371	`}`
372	`}`	372	`}`
373		373
374	`goto ALLGOOD;`	374	`goto ALLGOOD;`
375		375
376	`SHITQUIT:`	376	`SHITQUIT:`
377	`flen = -1;`	377	`flen = -1;`
378		378
379	`ALLGOOD:`	379	`ALLGOOD:`
380	`if (fd != NULL) fclose(fd);`	380	`if (fd != NULL) fclose(fd);`
381	`net_close(sock);`	381	`net_close(sock);`
382	`return(flen);`	382	`return(flen);`
383	`}`	383	`}`
384		384
385		385
386	`/* checks if file exists, returns 0 if not, non-zero otherwise */`	386	`/* checks if file exists, returns 0 if not, non-zero otherwise */`
387	`static int fexists(const char *fname) {`	387	`static int fexists(const char *fname) {`
388	`FILE *fd = fopen(fname, "rb");`	388	`FILE *fd = fopen(fname, "rb");`
389	`if (fd == NULL) return(0);`	389	`if (fd == NULL) return(0);`
390	`fclose(fd);`	390	`fclose(fd);`
391	`return(1);`	391	`return(1);`
392	`}`	392	`}`
393		393
394		394
395	`int main(int argc, char **argv) {`	395	`int main(int argc, char **argv) {`
396	`unsigned short bsum = 0;`	396	`unsigned short bsum = 0;`
397	`long flen;`	397	`long flen;`
398	`int ispost; /* is the request a POST? */`	398	`int ispost; /* is the request a POST? */`
399		399
400	`struct {`	400	`struct {`
401	`unsigned char buffer[5000];`	401	`unsigned char buffer[5000];`
402	`char ipaddr[64];`	402	`char ipaddr[64];`
403	`char url[64];`	403	`char url[64];`
404	`char outfname[16];`	404	`char outfname[16];`
405	`} *mem;`	405	`} *mem;`
406		406
407	`/* allocate memory */`	407	`/* allocate memory */`
408	`mem = malloc(sizeof(*mem));`	408	`mem = malloc(sizeof(*mem));`
409	`if (mem == NULL) {`	409	`if (mem == NULL) {`
410	`puts("ERROR: out of memory");`	410	`puts("ERROR: out of memory");`
411	`return(1);`	411	`return(1);`
412	`}`	412	`}`
413		413
414	`/* parse command line arguments */`	414	`/* parse command line arguments */`
415	`if (parseargv(argc, argv, mem->outfname, mem->url, &ispost) != 0) return(1);`	415	`if (parseargv(argc, argv, mem->outfname, mem->url, &ispost) != 0) return(1);`
416		416
417	`/* if outfname requested, make sure that file does not exist yet */`	417	`/* if outfname requested, make sure that file does not exist yet */`
418	`if ((mem->outfname[0] != 0) && (fexists(mem->outfname))) {`	418	`if ((mem->outfname[0] != 0) && (fexists(mem->outfname))) {`
419	`printf("ERROR: file %s already exists", mem->outfname);`	419	`printf("ERROR: file %s already exists", mem->outfname);`
420	`puts("");`	420	`puts("");`
421	`return(1);`	421	`return(1);`
422	`}`	422	`}`
423		423
424	`/* init network stack */`	424	`/* init network stack */`
425	`if (net_init() != 0) {`	425	`if (net_init() != 0) {`
426	`puts("ERROR: Network subsystem initialization failed");`	426	`puts("ERROR: Network subsystem initialization failed");`
427	`return(1);`	427	`return(1);`
428	`}`	428	`}`
429		429
430	`puts(""); /* required because watt-32 likes to print out garbage sometimes ("configuring through DHCP...") */`	430	`puts(""); /* required because watt-32 likes to print out garbage sometimes ("configuring through DHCP...") */`
431		431
432	`if (net_dnsresolve(mem->ipaddr, HOSTADDR) != 0) {`	432	`if (net_dnsresolve(mem->ipaddr, HOSTADDR) != 0) {`
433	`puts("ERROR: DNS resolution failed");`	433	`puts("ERROR: DNS resolution failed");`
434	`return(1);`	434	`return(1);`
435	`}`	435	`}`
436		436
437	`flen = htget(mem->ipaddr, mem->url, mem->outfname, &bsum, ispost, mem->buffer, sizeof(mem->buffer));`	437	`flen = htget(mem->ipaddr, mem->url, mem->outfname, &bsum, ispost, mem->buffer, sizeof(mem->buffer));`
438	`if (flen < 1) return(1);`	438	`if (flen < 1) return(1);`
439		439
440	`if (mem->outfname[0] != 0) {`	440	`if (mem->outfname[0] != 0) {`
441	`/* print bsum, size, filename */`	441	`/* print bsum, size, filename */`
442	`printf("Downloaded %ld KiB into %s (BSUM: %04X)", flen >> 10, mem->outfname, bsum);`	442	`printf("Downloaded %ld KiB into %s (BSUM: %04X)", flen >> 10, mem->outfname, bsum);`
443	`puts("");`	443	`puts("");`
444	`}`	444	`}`
445		445
446	`return(0);`	446	`return(0);`
447	`}`	447	`}`
448		448

Subversion Repositories SvarDOS

(root)/pkgnet/trunk/pkgnet.c – Rev 558 → 616