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A couple more stylistic changes to uudecode(1)

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sin 2014-02-04 14:44:43 +00:00
parent ed9985205b
commit bf2b270946
1 changed files with 15 additions and 20 deletions
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35
uudecode.c
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@ -40,23 +40,19 @@ main(int argc, char *argv[])
if (argc == 0) { if (argc == 0) {
checkheader(stdin, "<stdin>", "begin ", &mode, &fname); checkheader(stdin, "<stdin>", "begin ", &mode, &fname);
nfp = checkfile(fname); if ((nfp = checkfile(fname)) == NULL)
if (nfp == NULL)
eprintf("fopen %s:", fname); eprintf("fopen %s:", fname);
uudecode(stdin, nfp); uudecode(stdin, nfp);
fclose(nfp); fclose(nfp);
} else { } else {
if (!(fp = fopen(argv[0], "r"))) if ((fp = fopen(argv[0], "r")) == NULL)
eprintf("fopen %s:", argv[0]); eprintf("fopen %s:", argv[0]);
checkheader(fp, argv[0], "begin ", &mode, &fname); checkheader(fp, argv[0], "begin ", &mode, &fname);
nfp = checkfile(fname); if ((nfp = checkfile(fname)) == NULL)
if (nfp == NULL) {
fclose(fp);
eprintf("fopen %s:", fname); eprintf("fopen %s:", fname);
}
uudecode(fp, nfp); uudecode(fp, nfp);
fclose(fp);
fclose(nfp); fclose(nfp);
fclose(fp);
} }
if (fchmod(fileno(nfp), mode) < 0) if (fchmod(fileno(nfp), mode) < 0)
eprintf("chmod %s:", fname); eprintf("chmod %s:", fname);
@ -70,7 +66,7 @@ checkfile(const char *fname)
struct stat st; struct stat st;
int ret; int ret;
if (strcmp(fname,"/dev/stdout") == 0) if (strcmp(fname, "/dev/stdout") == 0)
return stdout; return stdout;
ret = lstat(fname, &st); ret = lstat(fname, &st);
/* if it is a new file, try to open it */ /* if it is a new file, try to open it */
@ -112,7 +108,7 @@ checkheader(FILE *fp, const char *s, const char *header, mode_t *mode, char **fn
/* now mode should be null terminated, q points to fname */ /* now mode should be null terminated, q points to fname */
checkmode(p,mode); checkmode(p,mode);
n = strlen(q); n = strlen(q);
while (n > 0 && (q[n-1] == '\n' || q[n-1] == '\r')) while (n > 0 && (q[n - 1] == '\n' || q[n - 1] == '\r'))
q[--n] = '\0'; q[--n] = '\0';
if (n > 0) if (n > 0)
*fname = q; *fname = q;
@ -126,9 +122,8 @@ checkmode(const char *str,mode_t *validmode)
if (str == NULL || str == '\0') if (str == NULL || str == '\0')
eprintf("invalid mode\n"); eprintf("invalid mode\n");
octal = strtol(str, &end, 8); octal = strtol(str, &end, 8);
if (*end == '\0') { /* successful conversion from a valid str */ if (*end == '\0') {
if (octal >= 0 && octal <= 07777) { if (octal >= 0 && octal <= 07777) {
if(octal & 04000) *validmode |= S_ISUID; if(octal & 04000) *validmode |= S_ISUID;
if(octal & 02000) *validmode |= S_ISGID; if(octal & 02000) *validmode |= S_ISGID;
@ -142,7 +137,6 @@ checkmode(const char *str,mode_t *validmode)
if(octal & 00004) *validmode |= S_IROTH; if(octal & 00004) *validmode |= S_IROTH;
if(octal & 00002) *validmode |= S_IWOTH; if(octal & 00002) *validmode |= S_IWOTH;
if(octal & 00001) *validmode |= S_IXOTH; if(octal & 00001) *validmode |= S_IXOTH;
*validmode &= 07777;
} }
} }
} }
@ -150,11 +144,11 @@ checkmode(const char *str,mode_t *validmode)
static void static void
uudecode(FILE *fp, FILE *outfp) uudecode(FILE *fp, FILE *outfp)
{ {
char *bufb=NULL, *p,*nl; char *bufb = NULL, *p, *nl;
size_t n=0; size_t n=0;
int ch , i; int ch, i;
#define DEC(c) (((c) - ' ') & 077) /* single character decode */ #define DEC(c) (((c) - ' ') & 077) /* single character decode */
#define IS_DEC(c) ( (((c) - ' ') >= 0) && (((c) - ' ') <= 077 + 1) ) #define IS_DEC(c) ( (((c) - ' ') >= 0) && (((c) - ' ') <= 077 + 1) )
#define OUT_OF_RANGE(c) do { \ #define OUT_OF_RANGE(c) do { \
eprintf("character %c out of range: [%d-%d]",(c), 1+' ',077+' '+1); \ eprintf("character %c out of range: [%d-%d]",(c), 1+' ',077+' '+1); \
@ -163,11 +157,12 @@ uudecode(FILE *fp, FILE *outfp)
while (afgets(&bufb,&n,fp)) { while (afgets(&bufb,&n,fp)) {
p = bufb; p = bufb;
/* trim newlines */ /* trim newlines */
if ((nl=strchr(bufb, '\n')) != NULL) if ((nl = strchr(bufb, '\n')) != NULL)
*nl = '\0'; *nl = '\0';
else else
eprintf("no newline found, aborting\n"); eprintf("no newline found, aborting\n");
if ((i = DEC(*p)) <= 0) /* check for last line */ /* check for last line */
if ((i = DEC(*p)) <= 0)
break; break;
for (++p; i > 0; p += 4, i -= 3) { for (++p; i > 0; p += 4, i -= 3) {
if (i >= 3) { if (i >= 3) {
@ -203,7 +198,7 @@ uudecode(FILE *fp, FILE *outfp)
eprintf("read error:"); eprintf("read error:");
} }
/* check for end or fail */ /* check for end or fail */
afgets(&bufb,&n,fp); afgets(&bufb, &n, fp);
if (strnlen(bufb,3) < 3 || strncmp(bufb, "end", 3) != 0 || bufb[3] != '\n') if (strnlen(bufb, 3) < 3 || strncmp(bufb, "end", 3) != 0 || bufb[3] != '\n')
eprintf("valid uudecode footer \"end\" not found\n"); eprintf("valid uudecode footer \"end\" not found\n");
} }