From: Ian Jackson <ian@chiark.greenend.org.uk>
Date: Tue, 1 Jun 2010 13:39:44 +0000 (+0100)
Subject: new lwc_fixed for distrib.pats and distributions
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ijackson/git?p=nntp-merge-chiark.git;a=commitdiff_plain;h=03f147931f1809a9010fe284a26a1775dfda718f

new lwc_fixed for distrib.pats and distributions
---

diff --git a/main.c b/main.c
index cd1314e..ff798f8 100644
--- a/main.c
+++ b/main.c
@@ -1,5 +1,7 @@
 /**/
 
+#define _GNU_SOURCE
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -755,7 +757,7 @@ static void cmd_article(char *arg, const struct cmdinfo *cip) {
 struct listwhatinfo {
   const char *name;
   void (*call)(const struct listwhatinfo *lwi, const char *cachename);
-  int mustall;
+  int mustall; /* -2 means ->call() must also print response and final . */
   const char *what;
   int einfo;
 };
@@ -798,43 +800,41 @@ static void lwc_bynewsgroup(const struct listwhatinfo *lwi, const char *cachenam
 }
 
 static void lwc_fixed(const struct listwhatinfo *lwi, const char *cachename) {
-  char *pathname;
-						  pathname= 
-  FILE *f= fopen(
-  char *p, tc;
-  struct disdone { struct disdone *next; char *name; } *done, *search, *tmp;
-  struct serverinfo *si;
-  char fnbuf[250];
-  char linebuf[MAX_RESPONSE+3];
-  FILE *file;
-
-  done= 0;
-  for (si= servers; si; si= si->next) {
-    if (!si->searchthis) continue;
-    sprintf(fnbuf,"%.100s:%.100s",si->nickname,cachename);
-    file= fopen(fnbuf,"r");
-    if (!file) continue;
-    while (fgets(linebuf,MAX_RESPONSE+3,file)) {
-      p= linebuf; while (*p && !isspace(*p)) p++;
-      tc= *p; *p= 0;
-      for (search= done;
-           search && strcasecmp(linebuf,search->name);
-           search= search->next);
-      if (search) continue;
-      tmp= xmalloc(sizeof(struct disdone));
-      tmp->name= xstrdup(linebuf);
-      tmp->next= done;
-      done= tmp;
-      *p= tc;
-      fputs(linebuf,stdout);
+  char *pathname=0;
+  int r= asprintf(&pathname, "/etc/news/nntp-merge/%s", lwi->name);
+  if (r<0) die("allocate for lwc fixed path");
+  FILE *file= fopen(pathname, "r");
+  if (!file) {
+    if (errno == ENOENT) {
+      printf("503 %s not available\r\n",lwi->what);
+      goto x;
     }
-    if (ferror(file)) die("read error on list file");
-    fclose(file);
+    die("open a list file");
   }
-  for (search= done; search; search= tmp) {
-    tmp= search->next; free(search->name); free(search);
-  }
-  return;
+
+  printf("215 %s (as configured) follows:\r\n",lwi->what);
+  int c;
+  int linestart= 1; /* -1 means comment */
+  while ((c= getc(file)) != EOF) {
+    if (linestart < 0) {
+      if (c=='\n') linestart= 1;
+      continue;
+    }
+    if (linestart) {
+      if (c=='#') { linestart= -1; continue; }
+      if (c=='.') putchar('.');
+      linestart= 0;
+    }
+    if (c=='\n') { putchar('\r'); linestart=1; }
+    putchar(c);
+  }
+  if (ferror(file))
+    die("error reading list");
+  assert(feof(file));
+  fputs(".\r\n",stdout);
+ x:
+  if (file) fclose(file);
+  free(pathname);
 } 
 
 static void lwc_overview(const struct listwhatinfo *lwi, const char *cachename) {
@@ -849,14 +849,15 @@ static void lwc_overview(const struct listwhatinfo *lwi, const char *cachename)
 }
 
 static const struct listwhatinfo listwhatinfos[]= {
-  { "",               lwc_bynewsgroup,    1,  "active file",                1   },
-  { "active",         lwc_bynewsgroup,    1,  "active file",                1   },
-  { "active.times",   lwc_bynewsgroup,    1,  "newsgroups' creation info",  0   },
-  { "newsgroups",     lwc_bynewsgroup,    0,  "newsgroup titles",           0   },
-  { "subscriptions",  lwc_bynewsgroup,    0,  "default subscription list",  0   },
-  { "distributions",  lwc_distributions,  0,  "distributions available"         },
-  { "overview.fmt",   lwc_overview,      -1,  "field list"                      },
-  {  0                                                                          }
+  { "",              lwc_bynewsgroup,    1, "active file",                1  },
+  { "active",        lwc_bynewsgroup,    1, "active file",                1  },
+  { "active.times",  lwc_bynewsgroup,    1, "newsgroups' creation info",  0  },
+  { "newsgroups",    lwc_bynewsgroup,    0, "newsgroup titles",           0  },
+  { "subscriptions", lwc_bynewsgroup,    0, "default subscription list",  0  },
+  { "distributions", lwc_fixed,         -2, "distributions available"        },
+  { "distrib.pats",  lwc_fixed,         -2, "default distribution patterns"  },
+  { "overview.fmt",  lwc_overview,      -1, "field list"                     },
+  {  0                                                                       }
 };
 
 static int copydatanodot(struct serverinfo *si, FILE *file) {
@@ -962,9 +963,11 @@ static void cmd_list(char *arg, const struct cmdinfo *cip) {
       return;
     }
   }
-  printf("215 %s follows:\r\n",lwi->what);
+  if (lwi->mustall>=-1)
+    printf("215 %s follows:\r\n",lwi->what);
   lwi->call(lwi,cachename);
-  printf(".\r\n");
+  if (lwi->mustall>=-1)
+    printf(".\r\n");
 }
 
 static int unadjustnumber(char *appendto, char *from, int offset) {