3 * cat startpoints.list | summer >data.list
4 * summer startpoints... >data.list
5 * prints md5sum of data-list to stderr
11 #include <sys/types.h>
30 static void fn_escaped(FILE *f, const char *fn) {
33 if (c>=33 && c<=126 && c!='\\') putc(c,f);
34 else fprintf(f,"\\x%02x",(int)(unsigned char)c);
38 static void add_pr(int *pr, int printf_ret) {
39 if (printf_ret == EOF) return;
43 static void vproblemx(const char *path, int padto, int per,
44 const char *fmt, va_list al) {
47 if (errfile==stderr) fputs("summer: error: ",stderr);
48 else add_pr(&pr, fprintf(errfile,"\\["));
50 add_pr(&pr, vfprintf(errfile,fmt,al));
51 if (per) add_pr(&pr, fprintf(errfile,": %s",strerror(e)));
53 if (errfile==stderr) {
55 fn_escaped(stderr,path);
60 add_pr(&pr, printf("]"));
66 static void problem_e(const char *path, int padto, const char *fmt, ...) {
69 vproblemx(path,padto,1,fmt,al);
73 static void problem(const char *path, int padto, const char *fmt, ...) {
76 vproblemx(path,padto,0,fmt,al);
80 static void csum_file(const char *path) {
84 unsigned char digest[16];
89 if (!f) { problem_e(path,sizeof(digest)*2,"open"); return; }
93 r= fread(db,1,sizeof(db),f);
95 problem_e(path,sizeof(digest)*2,"read");
98 if (!r) { assert(feof(f)); break; }
101 MD5Final(digest,&mc);
102 if (fclose(f)) { problem_e(path,sizeof(digest)*2,"close"); return; }
104 for (i=0; i<sizeof(digest); i++)
105 printf("%02x", digest[i]);
108 static void csum_dev(int cb, const struct stat *stab) {
109 printf("%c 0x%08lx %3lu %3lu %3lu %3lu ", cb,
110 (unsigned long)stab->st_rdev,
111 ((unsigned long)stab->st_rdev & 0x0ff000000U) >> 24,
112 ((unsigned long)stab->st_rdev & 0x000ff0000U) >> 16,
113 ((unsigned long)stab->st_rdev & 0x00000ff00U) >> 8,
114 ((unsigned long)stab->st_rdev & 0x0000000ffU) >> 0);
117 static void csum_str(const char *s) {
118 printf("%-*s", CSUMXL, s);
123 static int item(const char *path, const struct stat *stab,
124 int flag, struct FTW *ftws) {
125 char linktarg[MAXFN+1];
131 if (S_ISREG(stab->st_mode)) csum_file(path);
132 else if (S_ISDIR(stab->st_mode)) csum_str("dir");
133 else if (S_ISCHR(stab->st_mode)) csum_dev('c',stab);
134 else if (S_ISBLK(stab->st_mode)) csum_dev('b',stab);
135 else if (S_ISFIFO(stab->st_mode)) csum_str("pipe");
136 else if (S_ISLNK(stab->st_mode)) csum_str("link");
137 else if (S_ISSOCK(stab->st_mode)) csum_str("sock");
138 else problem(path,CSUMXL,"badobj: 0x%lx", (unsigned long)stab->st_mode);
143 problem_e(path,CSUMXL,"inaccessible");
147 problem(path,CSUMXL,"ftw flag 0x%x: %s",flag);
150 if (S_ISLNK(stab->st_mode)) {
153 r= readlink(path, linktarg, sizeof(linktarg)-1);
154 if (r==sizeof(linktarg)) { problem(path,-1,"readlink too big"); r=-1; }
155 else if (r<0) { problem_e(path,-1,"readlink"); }
156 else assert(r<sizeof(linktarg));
158 if (r<0) strcpy(linktarg,"\\?");
162 printf(" %10lu %4d %4o %10ld %10ld %10lu %10lu %10lu ",
163 (unsigned long)stab->st_size,
165 (unsigned)stab->st_mode & 07777U,
166 (unsigned long)stab->st_uid,
167 (unsigned long)stab->st_gid,
168 (unsigned long)stab->st_atime,
169 (unsigned long)stab->st_mtime,
170 (unsigned long)stab->st_ctime);
171 fn_escaped(stdout, path);
173 if (S_ISLNK(stab->st_mode)) {
175 fn_escaped(stdout, linktarg);
179 if (ferror(stdout)) { perror("summer: stdout"); exit(12); }
183 static void process(const char *startpoint) {
186 fprintf(stderr,"summer: processing: %s\n",startpoint);
187 r= nftw(startpoint, item, MAXDEPTH, FTW_MOUNT|FTW_PHYS);
188 if (r) { fprintf(stderr, "summer: nftw failed: %s: %s\n",
189 strerror(errno), startpoint); exit(4); }
192 static void from_stdin(void) {
198 fprintf(stderr, "summer: processing stdin lines as startpoints\n");
200 s= fgets(buf,sizeof(buf),stdin);
201 if (ferror(stdin)) { perror("summer: stdin"); exit(12); }
202 if (!s) { if (feof(stdin)) return; else abort(); }
205 if (buf[l-1]!='\n') { fprintf(stderr,"summer: line too long\n"); exit(8); }
211 int main(int argc, const char *const *argv) {
217 if ((arg=argv[1]) && *arg++=='-') {
222 "summer: usage: summer startpoint... >data.list\n"
223 " cat startpoints.list | summer >data.list\n");
232 fprintf(stderr,"summer: bad usage, try -h\n");
243 fprintf(stderr, "summer: processing command line args as startpoints\n");
244 while ((arg=*++argv)) {
248 if (ferror(stdout) || fclose(stdout)) {
249 perror("summer: stdout (at end)"); exit(12);
252 fputs("summer: done.\n", stderr);