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While I'm crusading against arbitrary limits, here's a redesign of

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prompt_t to arrange that the buffer in which each prompt is stored can
be reallocated larger during the input process.

[originally from svn r9317]
This commit is contained in:
Simon Tatham
2011-10-02 11:50:45 +00:00
parent 62cbc7dc0b
commit da66c0656a
9 changed files with 121 additions and 59 deletions
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19
putty.h
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@ -525,8 +525,19 @@ struct RSAKey; /* be a little careful of scope */
typedef struct {
char *prompt;
int echo;
char *result; /* allocated/freed by caller */
size_t result_len;
/*
* 'result' must be a dynamically allocated array of exactly
* 'resultsize' chars. The code for actually reading input may
* realloc it bigger (and adjust resultsize accordingly) if it has
* to. The caller should free it again when finished with it.
*
* If resultsize==0, then result may be NULL. When setting up a
* prompt_t, it's therefore easiest to initialise them this way,
* which means all actual allocation is done by the callee. This
* is what add_prompt does.
*/
char *result;
size_t resultsize;
} prompt_t;
typedef struct {
/*
@ -549,7 +560,9 @@ typedef struct {
* get_userpass_input(); initially NULL */
} prompts_t;
prompts_t *new_prompts(void *frontend);
void add_prompt(prompts_t *p, char *promptstr, int echo, size_t len);
void add_prompt(prompts_t *p, char *promptstr, int echo);
void prompt_set_result(prompt_t *pr, const char *newstr);
void prompt_ensure_result_size(prompt_t *pr, int len);
/* Burn the evidence. (Assumes _all_ strings want free()ing.) */
void free_prompts(prompts_t *p);