X-Git-Url: http://dolda2000.com/gitweb/?p=utils.git;a=blobdiff_plain;f=krb5mapcc.c;fp=krb5mapcc.c;h=0cc3418494c1a8fdff021ac4ee0efe8e2a1bb950;hp=0000000000000000000000000000000000000000;hb=35f3e6fac31f4cf005516ab61a345cff9b22df10;hpb=375cc58e73f1f96ea52ec5a7ed9aaedfc16f5023

diff --git a/krb5mapcc.c b/krb5mapcc.c
new file mode 100644
index 0000000..0cc3418
--- /dev/null
+++ b/krb5mapcc.c
@@ -0,0 +1,95 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <errno.h>
+#include <ctype.h>
+#include <dirent.h>
+#include <fcntl.h>
+#include <string.h>
+
+int isnumeric(char *str)
+{
+    while(*str) {
+	if(!isdigit(*str))
+	    return(0);
+	str++;
+    }
+    return(1);
+}
+
+char *findcc(int fd)
+{
+    int ret, dlen;
+    static char retbuf[1024];
+    char readbuf[1024];
+    char *p, *p2;
+    
+    dlen = 0;
+    p = readbuf;
+    do {
+	if(dlen == 1024)
+	    dlen = 0;
+	ret = read(fd, readbuf + dlen, sizeof(readbuf) - dlen);
+	if(ret < 0) {
+	    perror("read environ");
+	    return(NULL);
+	}
+	dlen += ret;
+	
+	while((p = memchr(readbuf, 0, dlen)) != NULL) {
+	    if((p2 = strchr(readbuf, '=')) != NULL) {
+		*(p2++) = 0;
+		if(!strcasecmp(readbuf, "KRB5CCNAME") && !strncasecmp(p2, "FILE:", 5)) {
+		    if(strlen(p2 + 5) >= sizeof(retbuf)) {
+			fprintf(stderr, "really long ccname!\n");
+			return(NULL);
+		    }
+		    strcpy(retbuf, p2 + 5);
+		    return(retbuf);
+		}
+	    }
+	    p++;
+	    memmove(readbuf, p, dlen -= (p - readbuf));
+	}
+    } while(ret != 0);
+    return(NULL);
+}
+
+int main(int argc, char **argv)
+{
+    int fd;
+    DIR *proc;
+    struct dirent *de;
+    char envbuf[1024];
+    char *p, *cc;
+    
+    if((proc = opendir("/proc")) == NULL) {
+	perror("/proc");
+	exit(1);
+    }
+    while((de = readdir(proc)) != NULL) {
+	if(!isnumeric(de->d_name))
+	    continue;
+	if(strlen(de->d_name) > 30)
+	    continue;
+	
+	p = envbuf;
+	strcpy(p, "/proc/");
+	p += 6;
+	strcpy(p, de->d_name);
+	p += strlen(de->d_name);
+	*(p++) = '/';
+	strcpy(p, "environ");
+	
+	if((fd = open(envbuf, O_RDONLY)) < 0)
+	    continue;
+	cc = findcc(fd);
+	close(fd);
+	
+	if(cc != NULL) {
+	    printf("%s %s\n", de->d_name, cc);
+	}
+    }
+    closedir(proc);
+    return(0);
+}