Initial revision

git-svn-id: http://opensvn.csie.org/pttbbs/pttbbs/trunk/pttbbs@1 63ad8ddf-47c3-0310-b6dd-a9e9d9715204

1 files changed, 106 insertions, 0 deletions

diff --git a/util/merge_passwd.c b/util/merge_passwd.c
new file mode 100644
index 00000000..d27c473b
--- /dev/null
+++ b/util/merge_passwd.c
@@ -0,0 +1,106 @@
+/* $Id: merge_passwd.c,v 1.1 2002/03/07 15:13:46 in2 Exp $ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <string.h>
+#include <sys/types.h>
+#include "config.h"
+#include "pttstruct.h"
+
+typedef struct hash_t {
+    char *userid;
+    struct hash_t *next;
+} hash_t;
+
+FILE *fout;
+hash_t *hash_tbl[65536];
+int counter;
+
+void usage() {
+    fprintf(stderr, "Usage:\n\n"
+	    "merge_passwd <output file> [input file1] [input file2] ...\n");
+}
+
+unsigned int string_hash(unsigned char *s) {
+    unsigned int v=0;
+    
+    while(*s) {
+	v = (v << 8) | (v >> 24);
+	v ^= toupper(*s++);	/* note this is case insensitive */
+    }
+    return (v * 2654435769UL) >> (32 - 16);
+}
+
+int is_exist(char *userid) {
+    int i;
+    hash_t *n;
+
+    i = string_hash(userid);
+    for(n = hash_tbl[i]; n != NULL; n = n->next)
+	if(strcasecmp(userid, n->userid) == 0)
+	    return 1;
+    return 0;
+}
+
+void add_hash(char *userid) {
+    int i;
+    hash_t *n;
+    
+    i = string_hash(userid);
+    
+    n = malloc(sizeof(*n));
+    n->userid = strdup(userid);
+    n->next = hash_tbl[i];
+    hash_tbl[i] = n;
+}
+
+void merge_user(userec_t *u) {
+    if(!is_exist(u->userid)) {
+	fwrite(u, sizeof(*u), 1, fout);
+	add_hash(u->userid);
+	++counter;
+    }
+}
+
+void merge_file(char *fname) {
+    FILE *fin;
+    userec_t u;
+    
+    if((fin = fopen(fname, "r")) == NULL) {
+	perror(fname);
+	return;
+    }
+    
+    counter = 0;
+    while(fread(&u, sizeof(u), 1, fin) == 1)
+	if(u.userid[0])
+	    merge_user(&u);
+    
+    printf("merge from %s: %d users\n", fname, counter);
+    
+    fclose(fin);
+}
+
+int main(int argc, char **argv) {
+    int i;
+    
+    if(argc < 2) {
+	usage();
+	return 1;
+    }
+    
+    bzero(hash_tbl, sizeof(hash_tbl));
+
+    if((fout = fopen(argv[1], "w")) == NULL) {
+	perror(argv[1]);
+	return 2;
+    }
+    
+    for(i = 2; i < argc; ++i)
+	merge_file(argv[i]);
+
+    fclose(fout);
+    printf("Done\n");
+    
+    return 0;
+}