WebSVN – SvarDOS – Diff – /pkgnet/tags/20220216/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.org
 */
 
#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 "svarlang.lib\svarlang.h"
 
#include "../../pkg/trunk/lsm.h"
 
 
#define PVER "20220216"
#define PDATE "2021-2022"
 
#define HOSTADDR "svardos.org"
 
 
/* convenience define that outputs nls strings to screen (followed by CR/LF) */
#define putsnls(x,y) puts(svarlang_strid((x << 8) | y))
 
 
/* 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("");
  putsnls(1, 0);  /* "pkgnet is the SvarDOS package downloader" */
  puts("");
  putsnls(1, 1);  /* "usage:  pkgnet search <term>" */
  putsnls(1, 2);  /* "        pkgnet pull <package>" */
  putsnls(1, 3);  /* "        pkgnet pull <package>-<version>" */
  putsnls(1, 6);  /* "        pkgnet checkup" */
  puts("");
  putsnls(1, 7);  /* "actions:" */
  puts("");
  putsnls(1, 8);  /* "search   - asks remote repository for the list of matching packages" */
  putsnls(1, 9);  /* "pull     - downloads package into current directory" */
  putsnls(1, 10); /* "checkup  - lists updates available for your system" */
  puts("");
  printf("Watt32 kernel: %s", net_engine());
  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) {
  const char *lang = getenv("LANG");
  if (lang == NULL) lang = "";
  *outfname = 0;
  *url = 0;
  *ispost = 0;
  if ((argc == 3) && (strcasecmp(argv[1], "search") == 0)) {
    sprintf(url, "/repo/?a=search&p=%s&lang=%s", argv[2], lang);
  } else if ((argc == 3) && (strcasecmp(argv[1], "pull") == 0)) {
    unsigned short i;
    sprintf(url, "/repo/?a=pull&p=%s&lang=%s", argv[2], lang);
    /* 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 svp extension to filename */
    strcpy(outfname + i, ".svp");
  } else if ((argc == 2) && (strcasecmp(argv[1], "checkup") == 0)) {
    sprintf(url, "/repo/?a=checkup&lang=%s", lang);
    *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)) {
      putsnls(9, 0); /* "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) {
      putsnls(9, 1); /* "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) {
    printf(svarlang_strid(0x0902), HOSTADDR); /* "ERROR: failed to connect to " HOSTADDR */
    puts("");
    goto SHITQUIT;
  }
 
  /* wait for net_connect() to actually connect */
  for (;;) {
    int connstate = net_isconnected(sock);
    if (connstate > 0) break;
    if (connstate < 0) {
      printf(svarlang_strid(0x0902), HOSTADDR); /* "ERROR: failed to connect to " HOSTADDR */
      puts("");
      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)) {
    putsnls(9, 3); /* "ERROR: failed to send a 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) {
        putsnls(9, 4); /* "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) {
        putsnls(9, 4); /* "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(svarlang_strid(0x0905), byteread); /* "ERROR: TCP communication error #%d" */
    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(svarlang_strid(0x0906), outfname); /* "ERROR: failed to create file %s" */
      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(svarlang_strid(0x0907), outfname, flen); /* "ERROR: failed to write data to file %s after %ld bytes" */
          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! */
        putsnls(9, 8); /* "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;
 
  svarlang_autoload("PKGNET");
 
  /* allocate memory */
  mem = malloc(sizeof(*mem));
  if (mem == NULL) {
    putsnls(9, 9); /* "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(svarlang_strid(0x090A), mem->outfname); /* "ERROR: file %s already exists" */
    puts("");
    return(1);
  }
 
  /* init network stack */
  if (net_init() != 0) {
    putsnls(9, 11); /* "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) {
    putsnls(9, 12); /* "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(svarlang_strid(0x0200), flen >> 10, mem->outfname, bsum); /* Downloaded %ld KiB into %s (BSUM: %04X) */
    puts("");
  }
 
  return(0);
}
 

Rev 725	Rev 726
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.org`	26	`* http://svardos.org`
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 "svarlang.lib\svarlang.h"`	38	`#include "svarlang.lib\svarlang.h"`
39		39
40	`#include "../../pkg/trunk/lsm.h"`	40	`#include "../../pkg/trunk/lsm.h"`
41		41
42		42
43	`#define PVER "20220216"`	43	`#define PVER "20220216"`
44	`#define PDATE "2021-2022"`	44	`#define PDATE "2021-2022"`
45		45
46	`#define HOSTADDR "svardos.org"`	46	`#define HOSTADDR "svardos.org"`
47		47
48		48
49	`/* convenience define that outputs nls strings to screen (followed by CR/LF) */`	49	`/* convenience define that outputs nls strings to screen (followed by CR/LF) */`
50	`#define putsnls(x,y) puts(svarlang_strid((x << 8) \| y))`	50	`#define putsnls(x,y) puts(svarlang_strid((x << 8) \| y))`
51		51
52		52
53	`/* returns length of all http headers, or 0 if uncomplete yet */`	53	`/* returns length of all http headers, or 0 if uncomplete yet */`
54	`static unsigned short detecthttpheadersend(const unsigned char *buff) {`	54	`static unsigned short detecthttpheadersend(const unsigned char *buff) {`
55	`char lastbyteislf = 0;`	55	`char lastbyteislf = 0;`
56	`unsigned short i;`	56	`unsigned short i;`
57	`for (i = 0; buff[i] != 0; i++) {`	57	`for (i = 0; buff[i] != 0; i++) {`
58	`if (buff[i] == '\r') continue; /* ignore CR characters */`	58	`if (buff[i] == '\r') continue; /* ignore CR characters */`
59	`if (buff[i] != '\n') {`	59	`if (buff[i] != '\n') {`
60	`lastbyteislf = 0;`	60	`lastbyteislf = 0;`
61	`continue;`	61	`continue;`
62	`}`	62	`}`
63	`/* cur byte is LF -> if last one was also LF then this is an empty line, meaning headers are over */`	63	`/* cur byte is LF -> if last one was also LF then this is an empty line, meaning headers are over */`
64	`if (lastbyteislf == 0) {`	64	`if (lastbyteislf == 0) {`
65	`lastbyteislf = 1;`	65	`lastbyteislf = 1;`
66	`continue;`	66	`continue;`
67	`}`	67	`}`
68	`/* end of headers! return length of headers */`	68	`/* end of headers! return length of headers */`
69	`return(i + 1); /* add 1 to skip the current \n character */`	69	`return(i + 1); /* add 1 to skip the current \n character */`
70	`}`	70	`}`
71	`return(0);`	71	`return(0);`
72	`}`	72	`}`
73		73
74		74
75	`static void help(void) {`	75	`static void help(void) {`
76	`puts("pkgnet ver " PVER " -- Copyright (C) " PDATE " Mateusz Viste");`	76	`puts("pkgnet ver " PVER " -- Copyright (C) " PDATE " Mateusz Viste");`
77	`puts("");`	77	`puts("");`
78	`putsnls(1, 0); /* "pkgnet is the SvarDOS package downloader" */`	78	`putsnls(1, 0); /* "pkgnet is the SvarDOS package downloader" */`
79	`puts("");`	79	`puts("");`
80	`putsnls(1, 1); /* "usage: pkgnet search <term>" */`	80	`putsnls(1, 1); /* "usage: pkgnet search <term>" */`
81	`putsnls(1, 2); /* " pkgnet pull <package>" */`	81	`putsnls(1, 2); /* " pkgnet pull <package>" */`
82	`putsnls(1, 3); /* " pkgnet pull <package>-<version>" */`	82	`putsnls(1, 3); /* " pkgnet pull <package>-<version>" */`
83	`putsnls(1, 6); /* " pkgnet checkup" */`	83	`putsnls(1, 6); /* " pkgnet checkup" */`
84	`puts("");`	84	`puts("");`
85	`putsnls(1, 7); /* "actions:" */`	85	`putsnls(1, 7); /* "actions:" */`
86	`puts("");`	86	`puts("");`
87	`putsnls(1, 8); /* "search - asks remote repository for the list of matching packages" */`	87	`putsnls(1, 8); /* "search - asks remote repository for the list of matching packages" */`
88	`putsnls(1, 9); /* "pull - downloads package into current directory" */`	88	`putsnls(1, 9); /* "pull - downloads package into current directory" */`
89	`putsnls(1, 10); /* "checkup - lists updates available for your system" */`	89	`putsnls(1, 10); /* "checkup - lists updates available for your system" */`
90	`puts("");`	90	`puts("");`
91	`printf("Watt32 kernel: %s", net_engine());`	91	`printf("Watt32 kernel: %s", net_engine());`
92	`puts("");`	92	`puts("");`
93	`}`	93	`}`
94		94
95		95
96	`/* parses command line arguments and fills outfname and url accordingly`	96	`/* parses command line arguments and fills outfname and url accordingly`
97	`* returns 0 on success, non-zero otherwise */`	97	`* returns 0 on success, non-zero otherwise */`
98	`static int parseargv(int argc, char * const argv, char outfname, char url, int ispost) {`	98	`static int parseargv(int argc, char * const argv, char outfname, char url, int ispost) {`
99	`const char *lang = getenv("LANG");`	99	`const char *lang = getenv("LANG");`
100	`if (lang == NULL) lang = "";`	100	`if (lang == NULL) lang = "";`
101	`*outfname = 0;`	101	`*outfname = 0;`
102	`*url = 0;`	102	`*url = 0;`
103	`*ispost = 0;`	103	`*ispost = 0;`
104	`if ((argc == 3) && (strcasecmp(argv[1], "search") == 0)) {`	104	`if ((argc == 3) && (strcasecmp(argv[1], "search") == 0)) {`
105	`sprintf(url, "/repo/?a=search&p=%s&lang=%s", argv[2], lang);`	105	`sprintf(url, "/repo/?a=search&p=%s&lang=%s", argv[2], lang);`
106	`} else if ((argc == 3) && (strcasecmp(argv[1], "pull") == 0)) {`	106	`} else if ((argc == 3) && (strcasecmp(argv[1], "pull") == 0)) {`
107	`unsigned short i;`	107	`unsigned short i;`
108	`sprintf(url, "/repo/?a=pull&p=%s&lang=%s", argv[2], lang);`	108	`sprintf(url, "/repo/?a=pull&p=%s&lang=%s", argv[2], lang);`
109	`/* copy argv[2] into outfname, but stop at first '-' or null terminator`	109	`/* copy argv[2] into outfname, but stop at first '-' or null terminator`
110	`* this trims any '-version' part in filename to respect 8+3 */`	110	`* this trims any '-version' part in filename to respect 8+3 */`
111	`for (i = 0; (argv[2][i] != 0) && (argv[2][i] != '-') && (i < 8); i++) {`	111	`for (i = 0; (argv[2][i] != 0) && (argv[2][i] != '-') && (i < 8); i++) {`
112	`outfname[i] = argv[2][i];`	112	`outfname[i] = argv[2][i];`
113	`}`	113	`}`
114	`/* add the svp extension to filename */`	114	`/* add the svp extension to filename */`
115	`strcpy(outfname + i, ".svp");`	115	`strcpy(outfname + i, ".svp");`
116	`} else if ((argc == 2) && (strcasecmp(argv[1], "checkup") == 0)) {`	116	`} else if ((argc == 2) && (strcasecmp(argv[1], "checkup") == 0)) {`
117	`sprintf(url, "/repo/?a=checkup&lang=%s", lang);`	117	`sprintf(url, "/repo/?a=checkup&lang=%s", lang);`
118	`*ispost = 1;`	118	`*ispost = 1;`
119	`} else {`	119	`} else {`
120	`help();`	120	`help();`
121	`return(-1);`	121	`return(-1);`
122	`}`	122	`}`
123	`return(0);`	123	`return(0);`
124	`}`	124	`}`
125		125
126		126
127	`static int htget_headers(unsigned char buffer, size_t buffersz, struct net_tcpsocket sock, int httpcode, int ischunked) {`	127	`static int htget_headers(unsigned char buffer, size_t buffersz, struct net_tcpsocket sock, int httpcode, int ischunked) {`
128	`unsigned char *buffptr = buffer;`	128	`unsigned char *buffptr = buffer;`
129	`unsigned short bufflen = 0;`	129	`unsigned short bufflen = 0;`
130	`int byteread;`	130	`int byteread;`
131	`time_t starttime = time(NULL);`	131	`time_t starttime = time(NULL);`
132	`for (;;) {`	132	`for (;;) {`
133	`byteread = net_recv(sock, buffptr, buffersz - (bufflen + 1)); /* -1 because I will append a NULL terminator */`	133	`byteread = net_recv(sock, buffptr, buffersz - (bufflen + 1)); /* -1 because I will append a NULL terminator */`
134		134
135	`if (byteread > 0) { /* got data */`	135	`if (byteread > 0) { /* got data */`
136	`int hdlen;`	136	`int hdlen;`
137	`bufflen += byteread;`	137	`bufflen += byteread;`
138	`buffptr += byteread;`	138	`buffptr += byteread;`
139	`buffer[bufflen] = 0;`	139	`buffer[bufflen] = 0;`
140	`hdlen = detecthttpheadersend(buffer);`	140	`hdlen = detecthttpheadersend(buffer);`
141	`if (hdlen > 0) { /* full headers - parse http code and continue processing */`	141	`if (hdlen > 0) { /* full headers - parse http code and continue processing */`
142	`int i;`	142	`int i;`
143	`buffer[hdlen - 1] = 0;`	143	`buffer[hdlen - 1] = 0;`
144	`/* find the first space (HTTP/1.1 200 OK) */`	144	`/* find the first space (HTTP/1.1 200 OK) */`
145	`for (i = 0; i < 16; i++) {`	145	`for (i = 0; i < 16; i++) {`
146	`if ((buffer[i] == ' ') \|\| (buffer[i] == 0)) break;`	146	`if ((buffer[i] == ' ') \|\| (buffer[i] == 0)) break;`
147	`}`	147	`}`
148	`if (buffer[i] != ' ') return(-1);`	148	`if (buffer[i] != ' ') return(-1);`
149	`httpcode = atoi((char )(buffer + i + 1));`	149	`httpcode = atoi((char )(buffer + i + 1));`
150	`/* switch all headers to low-case so it is easier to parse them */`	150	`/* switch all headers to low-case so it is easier to parse them */`
151	`for (i = 0; i < hdlen; i++) if ((buffer[i] >= 'A') && (buffer[i] <= 'Z')) buffer[i] += ('a' - 'A');`	151	`for (i = 0; i < hdlen; i++) if ((buffer[i] >= 'A') && (buffer[i] <= 'Z')) buffer[i] += ('a' - 'A');`
152	`/* look out for chunked transfer encoding */`	152	`/* look out for chunked transfer encoding */`
153	`{`	153	`{`
154	`char lineptr = strstr((char )buffer, "\ntransfer-encoding:");`	154	`char lineptr = strstr((char )buffer, "\ntransfer-encoding:");`
155	`if (lineptr != NULL) {`	155	`if (lineptr != NULL) {`
156	`lineptr += 19;`	156	`lineptr += 19;`
157	`/* replace nearest \r, \n or 0 by 0 */`	157	`/* replace nearest \r, \n or 0 by 0 */`
158	`for (i = 0; ; i++) {`	158	`for (i = 0; ; i++) {`
159	`if ((lineptr[i] == '\r') \|\| (lineptr[i] == '\n') \|\| (lineptr[i] == 0)) {`	159	`if ((lineptr[i] == '\r') \|\| (lineptr[i] == '\n') \|\| (lineptr[i] == 0)) {`
160	`lineptr[i] = 0;`	160	`lineptr[i] = 0;`
161	`break;`	161	`break;`
162	`}`	162	`}`
163	`}`	163	`}`
164	`/* do I see the 'chunked' word? */`	164	`/* do I see the 'chunked' word? */`
165	`if (strstr((char )lineptr, "chunked") != NULL) ischunked = 1;`	165	`if (strstr((char )lineptr, "chunked") != NULL) ischunked = 1;`
166	`}`	166	`}`
167	`}`	167	`}`
168	`/* rewind the buffer */`	168	`/* rewind the buffer */`
169	`bufflen -= hdlen;`	169	`bufflen -= hdlen;`
170	`memmove(buffer, buffer + hdlen, bufflen);`	170	`memmove(buffer, buffer + hdlen, bufflen);`
171	`return(bufflen); /* move to body processing now */`	171	`return(bufflen); /* move to body processing now */`
172	`}`	172	`}`
173		173
174	`} else if (byteread < 0) { /* abort on error */`	174	`} else if (byteread < 0) { /* abort on error */`
175	`return(-2); /* unexpected end of connection (while waiting for all http headers) */`	175	`return(-2); /* unexpected end of connection (while waiting for all http headers) */`
176		176
177	`} else { /* else no data received - look for timeout and release a cpu cycle */`	177	`} else { /* else no data received - look for timeout and release a cpu cycle */`
178	`if (time(NULL) - starttime > 20) return(-3); /* TIMEOUT! */`	178	`if (time(NULL) - starttime > 20) return(-3); /* TIMEOUT! */`
179	`_asm int 28h; /* release a CPU cycle */`	179	`_asm int 28h; /* release a CPU cycle */`
180	`}`	180	`}`
181	`}`	181	`}`
182	`}`	182	`}`
183		183
184		184
185	`/* provides body data of the POST query for checkup actions`	185	`/* provides body data of the POST query for checkup actions`
186	`fills buff with data and returns data length.`	186	`fills buff with data and returns data length.`
187	`must be called repeateadly until zero-lengh is returned */`	187	`must be called repeateadly until zero-lengh is returned */`
188	`static unsigned short checkupdata(char *buff) {`	188	`static unsigned short checkupdata(char *buff) {`
189	`static char *dosdir = NULL;`	189	`static char *dosdir = NULL;`
190	`static DIR *dp;`	190	`static DIR *dp;`
191	`static struct dirent *ep;`	191	`static struct dirent *ep;`
192		192
193	`/* make sure I know %DOSDIR% */`	193	`/* make sure I know %DOSDIR% */`
194	`if (dosdir == NULL) {`	194	`if (dosdir == NULL) {`
195	`dosdir = getenv("DOSDIR");`	195	`dosdir = getenv("DOSDIR");`
196	`if ((dosdir == NULL) \|\| (dosdir[0] == 0)) {`	196	`if ((dosdir == NULL) \|\| (dosdir[0] == 0)) {`
197	`putsnls(9, 0); /* "ERROR: %DOSDIR% not set" */`	197	`putsnls(9, 0); /* "ERROR: %DOSDIR% not set" */`
198	`return(0);`	198	`return(0);`
199	`}`	199	`}`
200	`}`	200	`}`
201		201
202	`/* if first call, open the package directory */`	202	`/* if first call, open the package directory */`
203	`if (dp == NULL) {`	203	`if (dp == NULL) {`
204	`sprintf(buff, "%s\\packages", dosdir);`	204	`sprintf(buff, "%s\\packages", dosdir);`
205	`dp = opendir(buff);`	205	`dp = opendir(buff);`
206	`if (dp == NULL) {`	206	`if (dp == NULL) {`
207	`putsnls(9, 1); /* "ERROR: Could not access %DOSDIR%\\packages directory" */`	207	`putsnls(9, 1); /* "ERROR: Could not access %DOSDIR%\\packages directory" */`
208	`return(0);`	208	`return(0);`
209	`}`	209	`}`
210	`}`	210	`}`
211		211
212	`for (;;) {`	212	`for (;;) {`
213	`int tlen;`	213	`int tlen;`
214	`char ver[20];`	214	`char ver[20];`
215	`ep = readdir(dp); /* readdir() result must never be freed (statically allocated) */`	215	`ep = readdir(dp); /* readdir() result must never be freed (statically allocated) */`
216	`if (ep == NULL) { /* no more entries */`	216	`if (ep == NULL) { /* no more entries */`
217	`closedir(dp);`	217	`closedir(dp);`
218	`return(0);`	218	`return(0);`
219	`}`	219	`}`
220		220
221	`tlen = strlen(ep->d_name);`	221	`tlen = strlen(ep->d_name);`
222	`if (tlen < 4) continue; /* files must be at least 5 bytes long ("x.lst") */`	222	`if (tlen < 4) continue; /* files must be at least 5 bytes long ("x.lst") */`
223	`if (strcasecmp(ep->d_name + tlen - 4, ".lst") != 0) continue; /* if not an .lst file, skip it silently */`	223	`if (strcasecmp(ep->d_name + tlen - 4, ".lst") != 0) continue; /* if not an .lst file, skip it silently */`
224	`ep->d_name[tlen - 4] = 0; /* trim out the ".lst" suffix */`	224	`ep->d_name[tlen - 4] = 0; /* trim out the ".lst" suffix */`
225		225
226	`/* load the metadata from %DOSDIR\APPINFO\.lsm /`	226	`/* load the metadata from %DOSDIR\APPINFO\.lsm /`
227	`sprintf(buff, "%s\\appinfo\\%s.lsm", dosdir, ep->d_name);`	227	`sprintf(buff, "%s\\appinfo\\%s.lsm", dosdir, ep->d_name);`
228	`readlsm(buff, ver, sizeof(ver));`	228	`readlsm(buff, ver, sizeof(ver));`
229		229
230	`return(sprintf(buff, "%s\t%s\n", ep->d_name, ver));`	230	`return(sprintf(buff, "%s\t%s\n", ep->d_name, ver));`
231	`}`	231	`}`
232	`}`	232	`}`
233		233
234		234
235	`/* fetch http data from ipaddr using url`	235	`/* fetch http data from ipaddr using url`
236	`* write result to file outfname if not null, or print to stdout otherwise`	236	`* write result to file outfname if not null, or print to stdout otherwise`
237	`* fills bsum with the BSD sum of the data`	237	`* fills bsum with the BSD sum of the data`
238	`* is ispost is non-zero, then the request is a POST and its body data is`	238	`* is ispost is non-zero, then the request is a POST and its body data is`
239	`* obtained through repeated calls to checkupdata()`	239	`* obtained through repeated calls to checkupdata()`
240	`* returns the length of data obtained, or neg value on error */`	240	`* returns the length of data obtained, or neg value on error */`
241	`static long htget(const char ipaddr, const char url, const char outfname, unsigned short bsum, int ispost, unsigned char *buffer, size_t buffersz) {`	241	`static long htget(const char ipaddr, const char url, const char outfname, unsigned short bsum, int ispost, unsigned char *buffer, size_t buffersz) {`
242	`struct net_tcpsocket *sock;`	242	`struct net_tcpsocket *sock;`
243	`time_t lastactivity, lastprogressoutput = 0;`	243	`time_t lastactivity, lastprogressoutput = 0;`
244	`int httpcode = -1, ischunked = 0;`	244	`int httpcode = -1, ischunked = 0;`
245	`int byteread;`	245	`int byteread;`
246	`long flen = 0, lastflen = 0;`	246	`long flen = 0, lastflen = 0;`
247	`FILE *fd = NULL;`	247	`FILE *fd = NULL;`
248		248
249	`/* unchunk state variable is using a little part of the supplied buffer */`	249	`/* unchunk state variable is using a little part of the supplied buffer */`
250	`struct unchunk_state unchstate = (void )buffer;`	250	`struct unchunk_state unchstate = (void )buffer;`
251	`buffer += sizeof(*unchstate);`	251	`buffer += sizeof(*unchstate);`
252	`buffersz -= sizeof(*unchstate);`	252	`buffersz -= sizeof(*unchstate);`
253	`memset(unchstate, 0, sizeof(*unchstate));`	253	`memset(unchstate, 0, sizeof(*unchstate));`
254		254
255	`sock = net_connect(ipaddr, 80);`	255	`sock = net_connect(ipaddr, 80);`
256	`if (sock == NULL) {`	256	`if (sock == NULL) {`
257	`printf(svarlang_strid(0x0902), HOSTADDR); /* "ERROR: failed to connect to " HOSTADDR */`	257	`printf(svarlang_strid(0x0902), HOSTADDR); /* "ERROR: failed to connect to " HOSTADDR */`
258	`puts("");`	258	`puts("");`
259	`goto SHITQUIT;`	259	`goto SHITQUIT;`
260	`}`	260	`}`
261		261
262	`/* wait for net_connect() to actually connect */`	262	`/* wait for net_connect() to actually connect */`
263	`for (;;) {`	263	`for (;;) {`
264	`int connstate = net_isconnected(sock);`	264	`int connstate = net_isconnected(sock);`
265	`if (connstate > 0) break;`	265	`if (connstate > 0) break;`
266	`if (connstate < 0) {`	266	`if (connstate < 0) {`
267	`printf(svarlang_strid(0x0902), HOSTADDR); /* "ERROR: failed to connect to " HOSTADDR */`	267	`printf(svarlang_strid(0x0902), HOSTADDR); /* "ERROR: failed to connect to " HOSTADDR */`
268	`puts("");`	268	`puts("");`
269	`goto SHITQUIT;`	269	`goto SHITQUIT;`
270	`}`	270	`}`
271	`_asm int 28h; /* DOS idle */`	271	`_asm int 28h; /* DOS idle */`
272	`}`	272	`}`
273		273
274	`/* socket is connected - send the http request (MUST be HTTP/1.0 because I do not support chunked transfers!) */`	274	`/* socket is connected - send the http request (MUST be HTTP/1.0 because I do not support chunked transfers!) */`
275	`if (ispost) {`	275	`if (ispost) {`
276	`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);`	276	`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);`
277	`} else {`	277	`} else {`
278	`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);`	278	`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);`
279	`}`	279	`}`
280		280
281	`if (net_send(sock, buffer, strlen((char )buffer)) != (int)strlen((char )buffer)) {`	281	`if (net_send(sock, buffer, strlen((char )buffer)) != (int)strlen((char )buffer)) {`
282	`putsnls(9, 3); /* "ERROR: failed to send a HTTP query to remote server" */`	282	`putsnls(9, 3); /* "ERROR: failed to send a HTTP query to remote server" */`
283	`goto SHITQUIT;`	283	`goto SHITQUIT;`
284	`}`	284	`}`
285		285
286	`/* send chunked data for POST queries */`	286	`/* send chunked data for POST queries */`
287	`if (ispost) {`	287	`if (ispost) {`
288	`unsigned short blen;`	288	`unsigned short blen;`
289	`int hlen;`	289	`int hlen;`
290	`char hbuf = (char )buffer + buffersz - 16;`	290	`char hbuf = (char )buffer + buffersz - 16;`
291	`do {`	291	`do {`
292	`blen = checkupdata((char *)buffer);`	292	`blen = checkupdata((char *)buffer);`
293	`if (blen == 0) { /* last item contains the message trailer */`	293	`if (blen == 0) { /* last item contains the message trailer */`
294	`hlen = sprintf(hbuf, "0\r\n");`	294	`hlen = sprintf(hbuf, "0\r\n");`
295	`} else {`	295	`} else {`
296	`hlen = sprintf(hbuf, "%X\r\n", blen);`	296	`hlen = sprintf(hbuf, "%X\r\n", blen);`
297	`}`	297	`}`
298	`if (net_send(sock, hbuf, hlen) != hlen) {`	298	`if (net_send(sock, hbuf, hlen) != hlen) {`
299	`putsnls(9, 4); /* "ERROR: failed to send POST data to remote server" */`	299	`putsnls(9, 4); /* "ERROR: failed to send POST data to remote server" */`
300	`goto SHITQUIT;`	300	`goto SHITQUIT;`
301	`}`	301	`}`
302	`/* add trailing CR/LF to buffer as required by chunked mode */`	302	`/* add trailing CR/LF to buffer as required by chunked mode */`
303	`buffer[blen++] = '\r';`	303	`buffer[blen++] = '\r';`
304	`buffer[blen++] = '\n';`	304	`buffer[blen++] = '\n';`
305	`if (net_send(sock, buffer, blen) != blen) {`	305	`if (net_send(sock, buffer, blen) != blen) {`
306	`putsnls(9, 4); /* "ERROR: failed to send POST data to remote server" */`	306	`putsnls(9, 4); /* "ERROR: failed to send POST data to remote server" */`
307	`goto SHITQUIT;`	307	`goto SHITQUIT;`
308	`}`	308	`}`
309	`} while (blen != 2);`	309	`} while (blen != 2);`
310	`}`	310	`}`
311		311
312	`/* receive and process HTTP headers */`	312	`/* receive and process HTTP headers */`
313	`byteread = htget_headers(buffer, buffersz, sock, &httpcode, &ischunked);`	313	`byteread = htget_headers(buffer, buffersz, sock, &httpcode, &ischunked);`
314		314
315	`/* transmission error? */`	315	`/* transmission error? */`
316	`if (byteread < 0) {`	316	`if (byteread < 0) {`
317	`printf(svarlang_strid(0x0905), byteread); /* "ERROR: TCP communication error #%d" */`	317	`printf(svarlang_strid(0x0905), byteread); /* "ERROR: TCP communication error #%d" */`
318	`puts("");`	318	`puts("");`
319	`goto SHITQUIT;`	319	`goto SHITQUIT;`
320	`}`	320	`}`
321		321
322	`/* open destination file if required and if no server-side error occured */`	322	`/* open destination file if required and if no server-side error occured */`
323	`if ((httpcode >= 200) && (httpcode <= 299) && (*outfname != 0)) {`	323	`if ((httpcode >= 200) && (httpcode <= 299) && (*outfname != 0)) {`
324	`fd = fopen(outfname, "wb");`	324	`fd = fopen(outfname, "wb");`
325	`if (fd == NULL) {`	325	`if (fd == NULL) {`
326	`printf(svarlang_strid(0x0906), outfname); /* "ERROR: failed to create file %s" */`	326	`printf(svarlang_strid(0x0906), outfname); /* "ERROR: failed to create file %s" */`
327	`puts("");`	327	`puts("");`
328	`goto SHITQUIT;`	328	`goto SHITQUIT;`
329	`}`	329	`}`
330	`}`	330	`}`
331		331
332	`/* read body of the answer (and chunk-decode it if needed) */`	332	`/* read body of the answer (and chunk-decode it if needed) */`
333	`lastactivity = time(NULL);`	333	`lastactivity = time(NULL);`
334	`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 */`	334	`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 */`
335		335
336	`if (byteread > 0) { /* got data */`	336	`if (byteread > 0) { /* got data */`
337	`lastactivity = time(NULL);`	337	`lastactivity = time(NULL);`
338		338
339	`/* unpack data if server transmits in chunked mode */`	339	`/* unpack data if server transmits in chunked mode */`
340	`if (ischunked) byteread = unchunk(buffer, byteread, unchstate);`	340	`if (ischunked) byteread = unchunk(buffer, byteread, unchstate);`
341		341
342	`/* if downloading to file, write stuff to disk */`	342	`/* if downloading to file, write stuff to disk */`
343	`if (fd != NULL) {`	343	`if (fd != NULL) {`
344	`int i;`	344	`int i;`
345	`if (fwrite(buffer, 1, byteread, fd) != byteread) {`	345	`if (fwrite(buffer, 1, byteread, fd) != byteread) {`
346	`printf(svarlang_strid(0x0907), outfname, flen); /* "ERROR: failed to write data to file %s after %ld bytes" */`	346	`printf(svarlang_strid(0x0907), outfname, flen); /* "ERROR: failed to write data to file %s after %ld bytes" */`
347	`puts("");`	347	`puts("");`
348	`break;`	348	`break;`
349	`}`	349	`}`
350	`flen += byteread;`	350	`flen += byteread;`
351	`/* update progress once a sec */`	351	`/* update progress once a sec */`
352	`if (lastprogressoutput != lastactivity) {`	352	`if (lastprogressoutput != lastactivity) {`
353	`lastprogressoutput = lastactivity;`	353	`lastprogressoutput = lastactivity;`
354	`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 */`	354	`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 */`
355	`lastflen = flen;`	355	`lastflen = flen;`
356	`fflush(stdout); /* avoid console buffering */`	356	`fflush(stdout); /* avoid console buffering */`
357	`}`	357	`}`
358	`/* update the bsd sum */`	358	`/* update the bsd sum */`
359	`for (i = 0; i < byteread; i++) {`	359	`for (i = 0; i < byteread; i++) {`
360	`/* rotr16 */`	360	`/* rotr16 */`
361	`unsigned short bsumlsb = *bsum & 1;`	361	`unsigned short bsumlsb = *bsum & 1;`
362	`*bsum >>= 1;`	362	`*bsum >>= 1;`
363	`*bsum \|= (bsumlsb << 15);`	363	`*bsum \|= (bsumlsb << 15);`
364	`*bsum += buffer[i];`	364	`*bsum += buffer[i];`
365	`}`	365	`}`
366	`} else { /* otherwise dump to screen */`	366	`} else { /* otherwise dump to screen */`
367	`buffer[byteread] = 0;`	367	`buffer[byteread] = 0;`
368	`printf("%s", buffer);`	368	`printf("%s", buffer);`
369	`}`	369	`}`
370		370
371	`} else if (byteread < 0) { /* end of connection */`	371	`} else if (byteread < 0) { /* end of connection */`
372	`break;`	372	`break;`
373		373
374	`} else { /* check for timeout (byteread == 0) */`	374	`} else { /* check for timeout (byteread == 0) */`
375	`if (time(NULL) - lastactivity > 20) { /* TIMEOUT! */`	375	`if (time(NULL) - lastactivity > 20) { /* TIMEOUT! */`
376	`putsnls(9, 8); /* "ERROR: Timeout while waiting for data" */`	376	`putsnls(9, 8); /* "ERROR: Timeout while waiting for data" */`
377	`goto SHITQUIT;`	377	`goto SHITQUIT;`
378	`}`	378	`}`
379	`/* waiting for packets - release a CPU cycle in the meantime */`	379	`/* waiting for packets - release a CPU cycle in the meantime */`
380	`_asm int 28h;`	380	`_asm int 28h;`
381	`}`	381	`}`
382	`}`	382	`}`
383		383
384	`goto ALLGOOD;`	384	`goto ALLGOOD;`
385		385
386	`SHITQUIT:`	386	`SHITQUIT:`
387	`flen = -1;`	387	`flen = -1;`
388		388
389	`ALLGOOD:`	389	`ALLGOOD:`
390	`if (fd != NULL) fclose(fd);`	390	`if (fd != NULL) fclose(fd);`
391	`net_close(sock);`	391	`net_close(sock);`
392	`return(flen);`	392	`return(flen);`
393	`}`	393	`}`
394		394
395		395
396	`/* checks if file exists, returns 0 if not, non-zero otherwise */`	396	`/* checks if file exists, returns 0 if not, non-zero otherwise */`
397	`static int fexists(const char *fname) {`	397	`static int fexists(const char *fname) {`
398	`FILE *fd = fopen(fname, "rb");`	398	`FILE *fd = fopen(fname, "rb");`
399	`if (fd == NULL) return(0);`	399	`if (fd == NULL) return(0);`
400	`fclose(fd);`	400	`fclose(fd);`
401	`return(1);`	401	`return(1);`
402	`}`	402	`}`
403		403
404		404
405	`int main(int argc, char **argv) {`	405	`int main(int argc, char **argv) {`
406	`unsigned short bsum = 0;`	406	`unsigned short bsum = 0;`
407	`long flen;`	407	`long flen;`
408	`int ispost; /* is the request a POST? */`	408	`int ispost; /* is the request a POST? */`
409		409
410	`struct {`	410	`struct {`
411	`unsigned char buffer[5000];`	411	`unsigned char buffer[5000];`
412	`char ipaddr[64];`	412	`char ipaddr[64];`
413	`char url[64];`	413	`char url[64];`
414	`char outfname[16];`	414	`char outfname[16];`
415	`} *mem;`	415	`} *mem;`
416		416
417	`svarlang_autoload("PKGNET");`	417	`svarlang_autoload("PKGNET");`
418		418
419	`/* allocate memory */`	419	`/* allocate memory */`
420	`mem = malloc(sizeof(*mem));`	420	`mem = malloc(sizeof(*mem));`
421	`if (mem == NULL) {`	421	`if (mem == NULL) {`
422	`putsnls(9, 9); /* "ERROR: out of memory" */`	422	`putsnls(9, 9); /* "ERROR: out of memory" */`
423	`return(1);`	423	`return(1);`
424	`}`	424	`}`
425		425
426	`/* parse command line arguments */`	426	`/* parse command line arguments */`
427	`if (parseargv(argc, argv, mem->outfname, mem->url, &ispost) != 0) return(1);`	427	`if (parseargv(argc, argv, mem->outfname, mem->url, &ispost) != 0) return(1);`
428		428
429	`/* if outfname requested, make sure that file does not exist yet */`	429	`/* if outfname requested, make sure that file does not exist yet */`
430	`if ((mem->outfname[0] != 0) && (fexists(mem->outfname))) {`	430	`if ((mem->outfname[0] != 0) && (fexists(mem->outfname))) {`
431	`printf(svarlang_strid(0x090A), mem->outfname); /* "ERROR: file %s already exists" */`	431	`printf(svarlang_strid(0x090A), mem->outfname); /* "ERROR: file %s already exists" */`
432	`puts("");`	432	`puts("");`
433	`return(1);`	433	`return(1);`
434	`}`	434	`}`
435		435
436	`/* init network stack */`	436	`/* init network stack */`
437	`if (net_init() != 0) {`	437	`if (net_init() != 0) {`
438	`putsnls(9, 11); /* "ERROR: Network subsystem initialization failed" */`	438	`putsnls(9, 11); /* "ERROR: Network subsystem initialization failed" */`
439	`return(1);`	439	`return(1);`
440	`}`	440	`}`
441		441
442	`puts(""); /* required because watt-32 likes to print out garbage sometimes ("configuring through DHCP...") */`	442	`puts(""); /* required because watt-32 likes to print out garbage sometimes ("configuring through DHCP...") */`
443		443
444	`if (net_dnsresolve(mem->ipaddr, HOSTADDR) != 0) {`	444	`if (net_dnsresolve(mem->ipaddr, HOSTADDR) != 0) {`
445	`putsnls(9, 12); /* "ERROR: DNS resolution failed" */`	445	`putsnls(9, 12); /* "ERROR: DNS resolution failed" */`
446	`return(1);`	446	`return(1);`
447	`}`	447	`}`
448		448
449	`flen = htget(mem->ipaddr, mem->url, mem->outfname, &bsum, ispost, mem->buffer, sizeof(mem->buffer));`	449	`flen = htget(mem->ipaddr, mem->url, mem->outfname, &bsum, ispost, mem->buffer, sizeof(mem->buffer));`
450	`if (flen < 1) return(1);`	450	`if (flen < 1) return(1);`
451		451
452	`if (mem->outfname[0] != 0) {`	452	`if (mem->outfname[0] != 0) {`
453	`/* print bsum, size, filename */`	453	`/* print bsum, size, filename */`
454	`printf(svarlang_strid(0x0200), flen >> 10, mem->outfname, bsum); /* Downloaded %ld KiB into %s (BSUM: %04X) */`	454	`printf(svarlang_strid(0x0200), flen >> 10, mem->outfname, bsum); /* Downloaded %ld KiB into %s (BSUM: %04X) */`
455	`puts("");`	455	`puts("");`
456	`}`	456	`}`
457		457
458	`return(0);`	458	`return(0);`
459	`}`	459	`}`
460		460

Subversion Repositories SvarDOS

(root)/pkgnet/tags/20220216/pkgnet.c @ 1126 – Rev 725 → 726