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Differential D14197 Diff 39570 head/libexec/getty/chat.c

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head/libexec/getty/chat.c

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static volatile int alarmed = 0; static volatile int alarmed = 0;
static void chat_alrm(int); static void chat_alrm(int);
static int chat_unalarm(void); static int chat_unalarm(void);
static int getdigit(unsigned char **, int, int); static int getdigit(unsigned char **, int, int);
static char **read_chat(char **); static char **read_chat(char **);
static char *cleanchr(char **, unsigned char); static char *cleanchr(char **, unsigned char);
static char *cleanstr(const unsigned char *, int); static const char *cleanstr(const unsigned char *, int);
static const char *result(int); static const char *result(int);
static int chat_expect(const char *); static int chat_expect(const char *);
static int chat_send(char const *); static int chat_send(char const *);
/* /*
* alarm signal handler * alarm signal handler
* handle timeouts in read/write * handle timeouts in read/write
▲ Show 20 Lines • Show All 191 Lines • ▼ Show 20 Linescleanchr(char **buf, unsigned char ch)
return tmp; return tmp;
} }
/* /*
* clean a string for display (ctrl/meta characters) * clean a string for display (ctrl/meta characters)
*/ */
static char * static const char *
cleanstr(const unsigned char *s, int l) cleanstr(const unsigned char *s, int l)
{ {
static unsigned char * tmp = NULL; static unsigned char * tmp = NULL;
static int tmplen = 0; static int tmplen = 0;
if (tmplen < l * 4 + 1) if (tmplen < l * 4 + 1)
tmp = realloc(tmp, tmplen = l * 4 + 1); tmp = realloc(tmp, tmplen = l * 4 + 1);
if (tmp == NULL) { if (tmp == NULL) {
tmplen = 0; tmplen = 0;
return (char *)"(mem alloc error)"; return "(mem alloc error)";
} else { } else {
int i = 0; int i = 0;
char * p = tmp; char * p = tmp;
while (i < l) while (i < l)
cleanchr(&p, s[i++]); cleanchr(&p, s[i++]);
*p = '\0'; *p = '\0';
} }
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