diff options
Diffstat (limited to 'apps/pdfclean.c')
| -rw-r--r-- | apps/pdfclean.c | 27 |
1 files changed, 19 insertions, 8 deletions
diff --git a/apps/pdfclean.c b/apps/pdfclean.c index a55b94ef..05bef10f 100644 --- a/apps/pdfclean.c +++ b/apps/pdfclean.c @@ -5,14 +5,14 @@ void usage() { fprintf(stderr, "usage: pdfclean [options] infile.pdf outfile.pdf\n" - " -r\trebuild xref table\n" - " -g\tgarbage collect unused objects\n" - " -x\texpand compressed streams\n" - " -d -\tset user password for decryption\n" - " -e\tencrypt outfile\n" + " -d -\tpassword for decryption\n" + " -g \tgarbage collect unused objects\n" + " -r \trebuild xref table\n" + " -x \texpand compressed streams\n" + " -e \tencrypt outfile\n" " -u -\tset user password for encryption\n" " -o -\tset owner password\n" - " -p -\tset permissions\n" + " -p -\tset permissions (combine letters 'pmca')\n" " -n -\tkey length in bits: 40 <= n <= 128\n" ); exit(1); @@ -91,7 +91,7 @@ int main(int argc, char **argv) char *userpw = ""; char *ownerpw = ""; - int perms = -4; /* 0xfffffffc */ + unsigned perms = 0xfffff0c0; /* nothing allowed */ int keylen = 40; char *password = ""; @@ -105,7 +105,18 @@ int main(int argc, char **argv) case 'e': ++ doencrypt; break; case 'u': userpw = optarg; break; case 'o': ownerpw = optarg; break; - case 'p': perms = atoi(optarg); break; + case 'p': + /* see TABLE 3.15 User access permissions */ + perms = 0xfffff0c0; + if (strchr(optarg, 'p')) /* print */ + perms |= (1 << 2) | (1 << 11); + if (strchr(optarg, 'm')) /* modify */ + perms |= (1 << 3) | (1 << 10); + if (strchr(optarg, 'c')) /* copy */ + perms |= (1 << 4) | (1 << 9); + if (strchr(optarg, 'a')) /* annotate / forms */ + perms |= (1 << 5) | (1 << 8); + break; case 'n': keylen = atoi(optarg); break; case 'd': password = optarg; break; default: usage(); |