--- /dev/null
+/*$Id: issub.c,v 1.4 1999/12/11 03:04:03 lindberg Exp $*/
+/*$Name: ezmlm-idx-040 $*/
+#include "stralloc.h"
+#include "getln.h"
+#include "readwrite.h"
+#include "substdio.h"
+#include "open.h"
+#include "byte.h"
+#include "case.h"
+#include "strerr.h"
+#include "error.h"
+#include "uint32.h"
+#include "fmt.h"
+#include "subscribe.h"
+#include "errtxt.h"
+#include <unistd.h>
+#include <libpq-fe.h>
+
+static void die_nomem(fatal)
+char *fatal;
+{
+ strerr_die2x(111,fatal,ERR_NOMEM);
+}
+
+static stralloc addr = {0};
+static stralloc lcaddr = {0};
+static stralloc line = {0};
+static stralloc fn = {0};
+static substdio ss;
+static char ssbuf[512];
+
+char *issub(dbname,userhost,tab,fatal)
+/* Returns (char *) to match if userhost is in the subscriber database */
+/* dbname, 0 otherwise. dbname is a base directory for a list and may NOT */
+/* be NULL */
+/* NOTE: The returned pointer is NOT VALID after a subsequent call to issub!*/
+
+char *dbname; /* directory to basedir */
+char *userhost;
+char *tab; /* override table name */
+char *fatal;
+
+{
+ PGresult *result;
+ char *ret;
+ char *table;
+
+ int fd;
+ unsigned int j;
+ uint32 h,lch;
+ char ch,lcch;
+ int match;
+
+ table = tab;
+ if ((ret = opensql(dbname,&table))) {
+ if (*ret) strerr_die2x(111,fatal,ret);
+ /* fallback to local db */
+
+ if (!stralloc_copys(&addr,"T")) die_nomem(fatal);
+ if (!stralloc_cats(&addr,userhost)) die_nomem(fatal);
+
+ j = byte_rchr(addr.s,addr.len,'@');
+ if (j == addr.len) return 0;
+ case_lowerb(addr.s + j + 1,addr.len - j - 1);
+ if (!stralloc_copy(&lcaddr,&addr)) die_nomem(fatal);
+ case_lowerb(lcaddr.s + 1,j - 1); /* totally lc version of addr */
+
+ h = 5381;
+ lch = h; /* make hash for both for backwards comp */
+ for (j = 0;j < addr.len;++j) { /* (lcaddr.len == addr.len) */
+ h = (h + (h << 5)) ^ (uint32) (unsigned char) addr.s[j];
+ lch = (lch + (lch << 5)) ^ (uint32) (unsigned char) lcaddr.s[j];
+ }
+ ch = 64 + (h % 53);
+ lcch = 64 + (lch % 53);
+
+ if (!stralloc_0(&addr)) die_nomem(fatal);
+ if (!stralloc_0(&lcaddr)) die_nomem(fatal);
+ if (!stralloc_copys(&fn,dbname)) die_nomem(fatal);
+ if (!stralloc_cats(&fn,"/subscribers/")) die_nomem(fatal);
+ if (!stralloc_catb(&fn,&lcch,1)) die_nomem(fatal);
+ if (!stralloc_0(&fn)) die_nomem(fatal);
+
+ fd = open_read(fn.s);
+ if (fd == -1) {
+ if (errno != error_noent)
+ strerr_die4sys(111,fatal,ERR_OPEN,fn.s,": ");
+ } else {
+ substdio_fdbuf(&ss,read,fd,ssbuf,sizeof(ssbuf));
+
+ for (;;) {
+ if (getln(&ss,&line,&match,'\0') == -1)
+ strerr_die4sys(111,fatal,ERR_READ,fn.s,": ");
+ if (!match) break;
+ if (line.len == lcaddr.len)
+ if (!case_diffb(line.s,line.len,lcaddr.s))
+ { close(fd); return line.s+1; }
+ }
+
+ close(fd);
+ }
+ /* here if file not found or (file found && addr not there) */
+
+ if (ch == lcch) return 0;
+
+ /* try case sensitive hash for backwards compatibility */
+ fn.s[fn.len - 2] = ch;
+ fd = open_read(fn.s);
+ if (fd == -1) {
+ if (errno != error_noent)
+ strerr_die4sys(111,fatal,ERR_OPEN,fn.s,": ");
+ return 0;
+ }
+ substdio_fdbuf(&ss,read,fd,ssbuf,sizeof(ssbuf));
+
+ for (;;) {
+ if (getln(&ss,&line,&match,'\0') == -1)
+ strerr_die4sys(111,fatal,ERR_READ,fn.s,": ");
+ if (!match) break;
+ if (line.len == addr.len)
+ if (!case_diffb(line.s,line.len,addr.s))
+ { close(fd); return line.s+1; }
+ }
+
+ close(fd);
+
+ return 0;
+ } else { /* SQL version */
+ /* SELECT address FROM list WHERE address = 'userhost' AND hash */
+ /* BETWEEN 0 AND 52. Without the hash restriction, we'd make it */
+ /* even easier to defeat. Just faking sender to the list name would*/
+ /* work. Since sender checks for posts are bogus anyway, I don't */
+ /* know if it's worth the cost of the "WHERE ...". */
+
+ if (!stralloc_copys(&addr,userhost)) die_nomem(fatal);
+ j = byte_rchr(addr.s,addr.len,'@');
+ if (j == addr.len) return 0;
+ case_lowerb(addr.s + j + 1,addr.len - j - 1);
+
+ if (!stralloc_copys(&line,"SELECT address FROM ")) die_nomem(fatal);
+ if (!stralloc_cats(&line,table)) die_nomem(fatal);
+ if (!stralloc_cats(&line," WHERE address ~* '^")) die_nomem(fatal);
+ if (!stralloc_cat(&line,&addr)) die_nomem(fatal);
+ if (!stralloc_cats(&line,"$'")) die_nomem(fatal);
+
+ if (!stralloc_0(&line)) die_nomem(fatal);
+ result = PQexec(psql,line.s);
+ if (result == NULL)
+ strerr_die2x(111,fatal,PQerrorMessage(psql));
+ if (PQresultStatus(result) != PGRES_TUPLES_OK )
+ strerr_die2x(111,fatal,PQresultErrorMessage(result));
+
+ /* No data returned in QUERY */
+ if (PQntuples(result) < 1)
+ return (char *)0;
+
+ if (!stralloc_copyb(&line,PQgetvalue(result,0,0),PQgetlength(result,0,0)))
+ die_nomem(fatal);
+ if (!stralloc_0(&line)) die_nomem(fatal);
+
+ PQclear(result);
+ return line.s;
+ }
+}
+
~mdw / ezmlm / blobdiff