09ad523a |
1 | /* |
2 | * Printing interface for PuTTY. |
3 | */ |
4 | |
5 | #include <windows.h> |
6 | #include "putty.h" |
7 | |
11773fc1 |
8 | /* |
9 | * Boggle. Flipping between the two branches of this #if appears to |
10 | * make all the difference as to whether network printers show up |
11 | * under PRINTER_ENUM_CONNECTIONS on NT 4. I don't pretend to |
12 | * understand this... |
13 | */ |
14 | #if 0 |
15 | #define ENUM_LEVEL 5 |
16 | #define ENUM_PTR LPPRINTER_INFO_5 |
17 | #define ENUM_TYPE PRINTER_INFO_5 |
18 | #define ENUM_MEMBER pPrinterName |
19 | #else |
20 | #define ENUM_LEVEL 1 |
21 | #define ENUM_PTR LPPRINTER_INFO_1 |
22 | #define ENUM_TYPE PRINTER_INFO_1 |
23 | #define ENUM_MEMBER pName |
24 | #endif |
25 | |
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26 | struct printer_enum_tag { |
27 | int nprinters; |
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28 | ENUM_PTR info; |
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29 | }; |
30 | |
31 | struct printer_job_tag { |
32 | HANDLE hprinter; |
33 | }; |
34 | |
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35 | static char *printer_add_enum(int param, char *buffer, |
36 | int offset, int *nprinters_ptr) |
37 | { |
38 | DWORD needed, nprinters; |
39 | |
40 | buffer = srealloc(buffer, offset+512); |
41 | |
42 | if (EnumPrinters(param, NULL, ENUM_LEVEL, buffer+offset, |
43 | 512, &needed, &nprinters) == 0) |
44 | return NULL; |
45 | |
46 | if (needed < 512) |
47 | needed = 512; |
48 | |
49 | buffer = srealloc(buffer, offset+needed); |
50 | |
51 | if (EnumPrinters(param, NULL, ENUM_LEVEL, buffer+offset, |
52 | needed, &needed, &nprinters) == 0) |
53 | return NULL; |
54 | |
55 | *nprinters_ptr += nprinters; |
56 | |
57 | return buffer; |
58 | } |
59 | |
09ad523a |
60 | printer_enum *printer_start_enum(int *nprinters_ptr) |
61 | { |
62 | printer_enum *ret = smalloc(sizeof(printer_enum)); |
11773fc1 |
63 | char *buffer = NULL, *retval; |
09ad523a |
64 | |
65 | *nprinters_ptr = 0; /* default return value */ |
66 | buffer = smalloc(512); |
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67 | |
68 | retval = printer_add_enum(PRINTER_ENUM_LOCAL, buffer, 0, nprinters_ptr); |
69 | if (!retval) |
70 | goto error; |
71 | else |
72 | buffer = retval; |
73 | retval = printer_add_enum(PRINTER_ENUM_CONNECTIONS, buffer, |
74 | sizeof(ENUM_TYPE) * *nprinters_ptr, |
75 | nprinters_ptr); |
76 | if (!retval) |
77 | goto error; |
78 | else |
79 | buffer = retval; |
80 | |
81 | ret->info = (ENUM_PTR)buffer; |
82 | ret->nprinters = *nprinters_ptr; |
09ad523a |
83 | |
84 | return ret; |
85 | |
86 | error: |
87 | sfree(buffer); |
88 | sfree(ret); |
11773fc1 |
89 | *nprinters_ptr = 0; |
09ad523a |
90 | return NULL; |
91 | } |
92 | |
93 | char *printer_get_name(printer_enum *pe, int i) |
94 | { |
95 | if (!pe) |
96 | return NULL; |
97 | if (i < 0 || i >= pe->nprinters) |
98 | return NULL; |
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99 | return pe->info[i].ENUM_MEMBER; |
09ad523a |
100 | } |
101 | |
102 | void printer_finish_enum(printer_enum *pe) |
103 | { |
104 | if (!pe) |
105 | return; |
106 | sfree(pe->info); |
107 | sfree(pe); |
108 | } |
109 | |
110 | printer_job *printer_start_job(char *printer) |
111 | { |
112 | printer_job *ret = smalloc(sizeof(printer_job)); |
113 | DOC_INFO_1 docinfo; |
114 | int jobstarted = 0, pagestarted = 0; |
115 | |
116 | ret->hprinter = NULL; |
117 | if (!OpenPrinter(printer, &ret->hprinter, NULL)) |
118 | goto error; |
119 | |
120 | docinfo.pDocName = "PuTTY remote printer output"; |
121 | docinfo.pOutputFile = NULL; |
122 | docinfo.pDatatype = "RAW"; |
123 | |
124 | if (!StartDocPrinter(ret->hprinter, 1, (LPSTR)&docinfo)) |
125 | goto error; |
126 | jobstarted = 1; |
127 | |
128 | if (!StartPagePrinter(ret->hprinter)) |
129 | goto error; |
130 | pagestarted = 1; |
131 | |
132 | return ret; |
133 | |
134 | error: |
135 | if (pagestarted) |
136 | EndPagePrinter(ret->hprinter); |
137 | if (jobstarted) |
138 | EndDocPrinter(ret->hprinter); |
139 | if (ret->hprinter) |
140 | ClosePrinter(ret->hprinter); |
141 | sfree(ret); |
142 | return NULL; |
143 | } |
144 | |
145 | void printer_job_data(printer_job *pj, void *data, int len) |
146 | { |
147 | DWORD written; |
148 | |
149 | if (!pj) |
150 | return; |
151 | |
152 | WritePrinter(pj->hprinter, data, len, &written); |
153 | } |
154 | |
155 | void printer_finish_job(printer_job *pj) |
156 | { |
157 | if (!pj) |
158 | return; |
159 | |
160 | EndPagePrinter(pj->hprinter); |
161 | EndDocPrinter(pj->hprinter); |
162 | ClosePrinter(pj->hprinter); |
163 | sfree(pj); |
164 | } |